Skip to Main Content

Close menu
Deals
Sign In

Shop All Products

Shop all Products

Metals
Plastics
Other Raw Materials
Machine Ready Stock
Protoboxes
Bearings, Shafts and Gears
Cable and Wire
Fastening and Bonding
Fittings
Finishing Products
Framing Systems
Tools and Fabricating
Facilities and Maintenance
Architectural & Decorative Components

Online Metals is your source for Brass Alloys, in stock and ready to ship! Click to shop brass now

Shop by Material
Metals

Alloy Steel

Aluminum

Beryllium Copper

Brass

Bronze

Carbon Steel

Copper

Copper-Nickel

Dura-Bar® Cast Iron
Magnesium

Nickel

Nickel Silver

Pewter

Stainless Steel

Titanium

Tool Steel

Tungsten Carbide

Zinc
Other Materials

Carbon Fiber

Coal

Machinable Wax

Plastics

Rubber

Wood
Mfg. Supplies

Fittings

Abrasives
Shop by Shape
Long Product (Bar)

Round

Square

Rectangle

Angle

Channel

Hex

Hollowbar

Half Oval

Half Round
T-Bar

T-Slot

Drill Rod

I-Beam

Round Rod

Threaded Rod

Key Stock

Rebar
Flat Product

Sheet & Plate

Strip

Precision Blanks

Circles

Expanded

Perforated

Textured Sheet

Tread (Diamond) Plate

Foil
Wire Mesh

Baseplates
Tube

Round

Pipe

Square

Rectangle

Coil

Hollowbar

Streamline Tube

EZ Tube

Hypodermic Tube
Other

Ball

Decorative

Pipe Fittings

NEW ProtoBoxes

Sample Pack

U-Edge

Cable and Wire

Razor Wire

Butt Hinges
Rewards
OLM Rewards

About Rewards

Sign In for Rewards
Industries Served
Industries Served

Aerospace

Architectural

Automotive/Motorsports

Bicycles/Cycling

Bladesmithing

Defense

Education/Schools

Marine

Medical
Power and Energy

Prototyping and R&D

Robotics
Knowledge Hub
Articles

Working With Metal

Understanding Materials

Applications

Projects

Maker Spotlight

Online Metals Exclusive Content
Reference Guides

Product Guides

Temper Guide

Tolerances

Hardness Conversion Table

Thickness Conversion Table

Fraction Conversion Table

Melting Points of Materials

Weight Calculator
Videos

Made with Metals

Materials Talk

DIY & How-to Projects

The Best of Online Metals
Quality

Mill Test Reports (MTR)

MSDS

Get a Quick Quote
Find a Location
Home

Close menu

Sign In

Sign In

Don't have an account?

Create Account

Create an Account

Faster Checkout
Simple Order Tracking
Helpful Business Tools

Contact Us

Notifications

Sign in or create an account to receive order updates and important notifications.

Sign In

Don't have an account?

Create Account

Filter By

Material

Alloy Steel (26)

Shape

Bar-Hex (26)

Alloy

4130 (1)
4140 (25)

Across Flats

0.75" (1)
0.875" (1)
1" (1)
1.25" (1)
1.375" (1)
1.5" (1)
1.75" (1)
10mm (1)
12mm (1)
13mm (1)
14mm (1)
15mm (1)
17mm (1)
2" (1)
2.25" (1)
2.375" (1)
2.5" (1)
2.75" (1)
20mm (1)
22mm (1)
24mm (1)
27mm (1)
30mm (1)
5mm (1)
7mm (1)
8mm (1)

Production Method

Cold Drawn (1)
Cold Finish (25)

Temper

Annealed (2)
Condition F (1)

Mill Test Report

true (26)

Deal Product

false (26)

Unit of Measure

mm (14)
inch (12)

Specs

ASTM-A108(Replaced ASTM-A331) (8)

Unit Quantity

1 (6)
2 (4)
8 (2)
3 (1)
4 (1)

Seller

Onlinemetals.com (26)

Home
Alloy Steel
Alloy Steel Hex Bar

Alloy Steel Hex Bar

Show full descriptionSkip description & see products

Alloy Steel Hex Bar

Description
Technical Info

We carry alloy steel hex bar in 4130 cold drawn normalized, 4140/4142 cold finish, and 4140 metric. Alloy steel hex bar stock is available in custom cut and 1ft, 2ft, 3ft, 4ft, 5ft, 6ft, 7ft, 8ft, and 12ft lengths, and metric hexagonal steel bar is sold in 5ft lengths. As one of the top hexagonal steel bar suppliers, we offer competitive prices, outstanding service, and convenience – order the steel hex rod you need for your project and have it delivered directly to you!

Material Properties

Alloy Steel Product Guide|

Alloy Steel Hex Bar Tolerances

26 Results

Sort by

Relevance Sort by

Relevance
Size
Price: High to Low
Price: Low to High
Product Name: A to Z
Product Name: Z to A

{ "item_id":"20247", "item_brand":"" , "material":"Alloy Steel", "shape":"Bar-Hex", "alloy":"4140", "temper":"", "productionMethod":"Cold Finish", "domesticAndDfars":"/", "stockAvailableIn":"", "marketplaceItem":"false", "customCut":"true" }

2" Alloy Steel Hex Bar 4140/4142-Cold Finish Part # 20247

2" Alloy Steel Hex Bar 4140/4142-Cold Finish -

Part #: 20247

*Select a Size or Custom Cut

+ Create Custom Cut
12″ (1 ft.) - $80.73 ea.
24″ (2 ft.) - $152.56 ea.
36″ (3 ft.) - $225.30 ea.
48″ (4 ft.) - $292.10 ea.
72″ (6 ft.) - $354.78 ea.
96″ (8 ft.) - $515.64 ea.
144″ (12 ft.) - $709.58 ea.

Save on shipping!

You can select smaller lengths and switch from freight to standard shipping and save!

How does selecting smaller lengths reduce shipping costs?

Reducing your order from an oversize item that requires expensive freight services to a smaller bundle makes it eligible for less expensive (and faster!) standard shipping services.

*Material tolerances will remain +/- 0.125".

Best shipping value:

Single Heat Lot Required

Why are heat lots important?

Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

QTY Update

$80.73 for 1

$80.73 ea.

Qty

Price ea.

Savings

20247_36_0:[{"min":"4","max":"9999","price":"168.53","dqty":"4+","dprice":"$168.53","dsaving":"25%","isSelected":null}]

More

Less

Dimensions

Across Flats: 2"

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Material Meets These Standard(s): ASTM-A108(Replaced ASTM-A331)

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details View more product details

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Sign in to save item

{ "item_id":"20242", "item_brand":"" , "material":"Alloy Steel", "shape":"Bar-Hex", "alloy":"4140", "temper":"", "productionMethod":"Cold Finish", "domesticAndDfars":"/", "stockAvailableIn":"", "marketplaceItem":"false", "customCut":"true" }

1" Alloy Steel Hex Bar 4140/4142-Cold Finish Part # 20242

1" Alloy Steel Hex Bar 4140/4142-Cold Finish -

Part #: 20242

*Select a Size or Custom Cut

+ Create Custom Cut
12″ (1 ft.) - $27.31 ea.
24″ (2 ft.) - $53.16 ea.
36″ (3 ft.) - $72.55 ea.
48″ (4 ft.) - $90.47 ea.
72″ (6 ft.) - $99.06 ea.
96″ (8 ft.) - $159.13 ea.
144″ (12 ft.) - $198.10 ea.

Save on shipping!

You can select smaller lengths and switch from freight to standard shipping and save!

How does selecting smaller lengths reduce shipping costs?

Reducing your order from an oversize item that requires expensive freight services to a smaller bundle makes it eligible for less expensive (and faster!) standard shipping services.

*Material tolerances will remain +/- 0.125".

Best shipping value:

Single Heat Lot Required

Why are heat lots important?

Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

QTY Update

$27.31 for 1

$27.31 ea.

Qty

Price ea.

Savings

20242_36_0:[{"min":"4","max":"9999","price":"47.05","dqty":"4+","dprice":"$47.05","dsaving":"35%","isSelected":null}]

More

Less

Dimensions

Across Flats: 1"

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Material Meets These Standard(s): ASTM-A108(Replaced ASTM-A331)

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details View more product details

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Sign in to save item

{ "item_id":"20243", "item_brand":"" , "material":"Alloy Steel", "shape":"Bar-Hex", "alloy":"4140", "temper":"", "productionMethod":"Cold Finish", "domesticAndDfars":"/", "stockAvailableIn":"", "marketplaceItem":"false", "customCut":"true" }

1 1/4" Alloy Steel Hex Bar 4140/4142-Cold Finish Part # 20243

1 1/4" Alloy Steel Hex Bar 4140/4142-Cold Finish -

Part #: 20243

*Select a Size or Custom Cut

+ Create Custom Cut
12″ (1 ft.) - $45.74 ea.
24″ (2 ft.) - $89.00 ea.
36″ (3 ft.) - $121.48 ea.
48″ (4 ft.) - $151.47 ea.
72″ (6 ft.) - $165.86 ea.
96″ (8 ft.) - $266.47 ea.
144″ (12 ft.) - $331.70 ea.

Save on shipping!

You can select smaller lengths and switch from freight to standard shipping and save!

How does selecting smaller lengths reduce shipping costs?

Reducing your order from an oversize item that requires expensive freight services to a smaller bundle makes it eligible for less expensive (and faster!) standard shipping services.

*Material tolerances will remain +/- 0.125".

Best shipping value:

Single Heat Lot Required

Why are heat lots important?

Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

QTY Update

$45.74 for 1

$45.74 ea.

Qty

Price ea.

Savings

20243_36_0:[{"min":"4","max":"9999","price":"78.78","dqty":"4+","dprice":"$78.78","dsaving":"35%","isSelected":null}]

More

Less

Dimensions

Across Flats: 1.25"

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Material Meets These Standard(s): ASTM-A108(Replaced ASTM-A331)

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details View more product details

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Sign in to save item

{ "item_id":"24519", "item_brand":"" , "material":"Alloy Steel", "shape":"Bar-Hex", "alloy":"4140", "temper":"", "productionMethod":"Cold Finish", "domesticAndDfars":"/", "stockAvailableIn":"", "marketplaceItem":"false", "customCut":"false" }

14mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] Part # 24519

14mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] -

Part #: 24519

Pack of 2

Save on shipping!

You can select smaller lengths and switch from freight to standard shipping and save!

How does selecting smaller lengths reduce shipping costs?

Reducing your order from an oversize item that requires expensive freight services to a smaller bundle makes it eligible for less expensive (and faster!) standard shipping services.

*Material tolerances will remain +/- 0.125".

Best shipping value:

Single Heat Lot Required

Why are heat lots important?

Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

QTY Update

$188.41

$188.41 ea.

Dimensions

Across Flats: 14mm

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Key Features

FREEMTRAvailable

View more product details View more product details

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Sign in to save item

{ "item_id":"20250", "item_brand":"" , "material":"Alloy Steel", "shape":"Bar-Hex", "alloy":"4140", "temper":"", "productionMethod":"Cold Finish", "domesticAndDfars":"/", "stockAvailableIn":"", "marketplaceItem":"false", "customCut":"true" }

2/ 1/2" Alloy Steel Hex Bar 4140/4142-Cold Finish Part # 20250

2/ 1/2" Alloy Steel Hex Bar 4140/4142-Cold Finish -

Part #: 20250

*Select a Size or Custom Cut

+ Create Custom Cut
12″ (1 ft.) - $161.07 ea.
24″ (2 ft.) - $304.44 ea.
36″ (3 ft.) - $449.58 ea.
48″ (4 ft.) - $582.92 ea.
72″ (6 ft.) - $708.00 ea.
144″ (12 ft.) - $1416.00 ea.

Save on shipping!

You can select smaller lengths and switch from freight to standard shipping and save!

How does selecting smaller lengths reduce shipping costs?

Reducing your order from an oversize item that requires expensive freight services to a smaller bundle makes it eligible for less expensive (and faster!) standard shipping services.

*Material tolerances will remain +/- 0.125".

Best shipping value:

Single Heat Lot Required

Why are heat lots important?

Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

QTY Update

$161.07 for 1

$161.07 ea.

Qty

Price ea.

Savings

20250_36_0:[{"min":"4","max":"9999","price":"336.30","dqty":"4+","dprice":"$336.30","dsaving":"25%","isSelected":null}]

More

Less

Dimensions

Across Flats: 2.5"

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Material Meets These Standard(s): ASTM-A108(Replaced ASTM-A331)

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details View more product details

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Sign in to save item

{ "item_id":"20244", "item_brand":"" , "material":"Alloy Steel", "shape":"Bar-Hex", "alloy":"4140", "temper":"", "productionMethod":"Cold Finish", "domesticAndDfars":"/", "stockAvailableIn":"", "marketplaceItem":"false", "customCut":"true" }

1 1/2" Alloy Steel Hex Bar 4140/4142-Cold Finish Part # 20244

1 1/2" Alloy Steel Hex Bar 4140/4142-Cold Finish -

Part #: 20244

*Select a Size or Custom Cut

+ Create Custom Cut
12″ (1 ft.) - $70.34 ea.
24″ (2 ft.) - $136.85 ea.
36″ (3 ft.) - $186.76 ea.
48″ (4 ft.) - $232.87 ea.
72″ (6 ft.) - $254.98 ea.
96″ (8 ft.) - $409.65 ea.

Save on shipping!

You can select smaller lengths and switch from freight to standard shipping and save!

How does selecting smaller lengths reduce shipping costs?

Reducing your order from an oversize item that requires expensive freight services to a smaller bundle makes it eligible for less expensive (and faster!) standard shipping services.

*Material tolerances will remain +/- 0.125".

Best shipping value:

Single Heat Lot Required

Why are heat lots important?

Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

QTY Update

$70.34 for 1

$70.34 ea.

Dimensions

Across Flats: 1.5"

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details View more product details

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Sign in to save item

{ "item_id":"20246", "item_brand":"" , "material":"Alloy Steel", "shape":"Bar-Hex", "alloy":"4140", "temper":"", "productionMethod":"Cold Finish", "domesticAndDfars":"/", "stockAvailableIn":"", "marketplaceItem":"false", "customCut":"true" }

1 3/4" Alloy Steel Hex Bar 4140/4142-Cold Finish Part # 20246

1 3/4" Alloy Steel Hex Bar 4140/4142-Cold Finish -

Part #: 20246

*Select a Size or Custom Cut

+ Create Custom Cut
12″ (1 ft.) - $64.29 ea.
24″ (2 ft.) - $121.49 ea.
36″ (3 ft.) - $179.43 ea.
48″ (4 ft.) - $232.65 ea.
72″ (6 ft.) - $282.56 ea.
96″ (8 ft.) - $410.67 ea.
144″ (12 ft.) - $565.12 ea.

Save on shipping!

You can select smaller lengths and switch from freight to standard shipping and save!

How does selecting smaller lengths reduce shipping costs?

Reducing your order from an oversize item that requires expensive freight services to a smaller bundle makes it eligible for less expensive (and faster!) standard shipping services.

*Material tolerances will remain +/- 0.125".

Best shipping value:

Single Heat Lot Required

Why are heat lots important?

Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

QTY Update

$64.29 for 1

$64.29 ea.

Dimensions

Across Flats: 1.75"

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Material Meets These Standard(s): ASTM-A108(Replaced ASTM-A331)

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details View more product details

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Sign in to save item

{ "item_id":"24521", "item_brand":"" , "material":"Alloy Steel", "shape":"Bar-Hex", "alloy":"4140", "temper":"Annealed", "productionMethod":"Cold Finish", "domesticAndDfars":"/", "stockAvailableIn":"", "marketplaceItem":"false", "customCut":"false" }

17mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] Part # 24521

17mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] -

Part #: 24521

Pack of 1

Save on shipping!

You can select smaller lengths and switch from freight to standard shipping and save!

How does selecting smaller lengths reduce shipping costs?

Reducing your order from an oversize item that requires expensive freight services to a smaller bundle makes it eligible for less expensive (and faster!) standard shipping services.

*Material tolerances will remain +/- 0.125".

Best shipping value:

Single Heat Lot Required

Why are heat lots important?

Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

QTY Update

$137.61

$137.61 ea.

Dimensions

Temper: Annealed
Across Flats: 17mm

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Key Features

FREEMTRAvailable

View more product details View more product details

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Sign in to save item

{ "item_id":"20248", "item_brand":"" , "material":"Alloy Steel", "shape":"Bar-Hex", "alloy":"4140", "temper":"", "productionMethod":"Cold Finish", "domesticAndDfars":"/", "stockAvailableIn":"", "marketplaceItem":"false", "customCut":"true" }

2 1/4" Alloy Steel Hex Bar 4140/4142-Cold Finish Part # 20248

2 1/4" Alloy Steel Hex Bar 4140/4142-Cold Finish -

Part #: 20248

*Select a Size or Custom Cut

+ Create Custom Cut
12″ (1 ft.) - $99.13 ea.
24″ (2 ft.) - $187.36 ea.
36″ (3 ft.) - $276.68 ea.
48″ (4 ft.) - $358.74 ea.
72″ (6 ft.) - $435.70 ea.
96″ (8 ft.) - $633.22 ea.
144″ (12 ft.) - $871.42 ea.

Save on shipping!

You can select smaller lengths and switch from freight to standard shipping and save!

How does selecting smaller lengths reduce shipping costs?

Reducing your order from an oversize item that requires expensive freight services to a smaller bundle makes it eligible for less expensive (and faster!) standard shipping services.

*Material tolerances will remain +/- 0.125".

Best shipping value:

Single Heat Lot Required

Why are heat lots important?

Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

QTY Update

$99.13 for 1

$99.13 ea.

Qty

Price ea.

Savings

20248_36_0:[{"min":"4","max":"9999","price":"206.96","dqty":"4+","dprice":"$206.96","dsaving":"25%","isSelected":null}]

More

Less

Dimensions

Across Flats: 2.25"

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Material Meets These Standard(s): ASTM-A108(Replaced ASTM-A331)

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details View more product details

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Sign in to save item

{ "item_id":"20251", "item_brand":"" , "material":"Alloy Steel", "shape":"Bar-Hex", "alloy":"4140", "temper":"", "productionMethod":"Cold Finish", "domesticAndDfars":"/", "stockAvailableIn":"", "marketplaceItem":"false", "customCut":"true" }

2 3/4" Alloy Steel Hex Bar 4140/4142-Cold Finish Part # 20251

2 3/4" Alloy Steel Hex Bar 4140/4142-Cold Finish -

Part #: 20251

*Select a Size or Custom Cut

+ Create Custom Cut
12″ (1 ft.) - $231.04 ea.
24″ (2 ft.) - $436.67 ea.
36″ (3 ft.) - $644.86 ea.
48″ (4 ft.) - $836.10 ea.
72″ (6 ft.) - $1015.52 ea.
144″ (12 ft.) - $2031.02 ea.

Save on shipping!

You can select smaller lengths and switch from freight to standard shipping and save!

How does selecting smaller lengths reduce shipping costs?

Reducing your order from an oversize item that requires expensive freight services to a smaller bundle makes it eligible for less expensive (and faster!) standard shipping services.

*Material tolerances will remain +/- 0.125".

Best shipping value:

Single Heat Lot Required

Why are heat lots important?

Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

QTY Update

$231.04 for 1

$231.04 ea.

Qty

Price ea.

Savings

20251_36_0:[{"min":"4","max":"9999","price":"482.37","dqty":"4+","dprice":"$482.37","dsaving":"25%","isSelected":null}]

More

Less

Dimensions

Across Flats: 2.75"

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Material Meets These Standard(s): ASTM-A108(Replaced ASTM-A331)

Key Features

CUSTOM CUT

FREEMTRAvailable

View more product details View more product details

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Sign in to save item

{ "item_id":"24513", "item_brand":"" , "material":"Alloy Steel", "shape":"Bar-Hex", "alloy":"4140", "temper":"", "productionMethod":"Cold Finish", "domesticAndDfars":"/", "stockAvailableIn":"", "marketplaceItem":"false", "customCut":"false" }

5mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] Part # 24513

5mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] -

Part #: 24513

Pack of 8

Save on shipping!

You can select smaller lengths and switch from freight to standard shipping and save!

How does selecting smaller lengths reduce shipping costs?

Reducing your order from an oversize item that requires expensive freight services to a smaller bundle makes it eligible for less expensive (and faster!) standard shipping services.

*Material tolerances will remain +/- 0.125".

Best shipping value:

Single Heat Lot Required

Why are heat lots important?

Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

QTY Update

$139.57

$139.57 ea.

Dimensions

Across Flats: 5mm

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Key Features

FREEMTRAvailable

View more product details View more product details

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Sign in to save item

{ "item_id":"24514", "item_brand":"" , "material":"Alloy Steel", "shape":"Bar-Hex", "alloy":"4140", "temper":"", "productionMethod":"Cold Finish", "domesticAndDfars":"/", "stockAvailableIn":"", "marketplaceItem":"false", "customCut":"false" }

7mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] Part # 24514

7mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] -

Part #: 24514

Pack of 8

Save on shipping!

You can select smaller lengths and switch from freight to standard shipping and save!

How does selecting smaller lengths reduce shipping costs?

Reducing your order from an oversize item that requires expensive freight services to a smaller bundle makes it eligible for less expensive (and faster!) standard shipping services.

*Material tolerances will remain +/- 0.125".

Best shipping value:

Single Heat Lot Required

Why are heat lots important?

Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

QTY Update

$138.58

$138.58 ea.

Dimensions

Across Flats: 7mm

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Key Features

FREEMTRAvailable

View more product details View more product details

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Sign in to save item

{ "item_id":"24515", "item_brand":"" , "material":"Alloy Steel", "shape":"Bar-Hex", "alloy":"4140", "temper":"", "productionMethod":"Cold Finish", "domesticAndDfars":"/", "stockAvailableIn":"", "marketplaceItem":"false", "customCut":"false" }

8mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] Part # 24515

8mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] -

Part #: 24515

Pack of 4

Save on shipping!

You can select smaller lengths and switch from freight to standard shipping and save!

How does selecting smaller lengths reduce shipping costs?

Reducing your order from an oversize item that requires expensive freight services to a smaller bundle makes it eligible for less expensive (and faster!) standard shipping services.

*Material tolerances will remain +/- 0.125".

Best shipping value:

Single Heat Lot Required

Why are heat lots important?

Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

QTY Update

$127.18

$127.18 ea.

Dimensions

Across Flats: 8mm

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Key Features

FREEMTRAvailable

View more product details View more product details

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Sign in to save item

{ "item_id":"24516", "item_brand":"" , "material":"Alloy Steel", "shape":"Bar-Hex", "alloy":"4140", "temper":"", "productionMethod":"Cold Finish", "domesticAndDfars":"/", "stockAvailableIn":"", "marketplaceItem":"false", "customCut":"false" }

10mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] Part # 24516

10mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] -

Part #: 24516

Pack of 3

Save on shipping!

You can select smaller lengths and switch from freight to standard shipping and save!

How does selecting smaller lengths reduce shipping costs?

Reducing your order from an oversize item that requires expensive freight services to a smaller bundle makes it eligible for less expensive (and faster!) standard shipping services.

*Material tolerances will remain +/- 0.125".

Best shipping value:

Single Heat Lot Required

Why are heat lots important?

Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

QTY Update

$133.67

$133.67 ea.

Dimensions

Across Flats: 10mm

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Key Features

FREEMTRAvailable

View more product details View more product details

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Sign in to save item

{ "item_id":"24517", "item_brand":"" , "material":"Alloy Steel", "shape":"Bar-Hex", "alloy":"4140", "temper":"", "productionMethod":"Cold Finish", "domesticAndDfars":"/", "stockAvailableIn":"", "marketplaceItem":"false", "customCut":"false" }

12mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] Part # 24517

12mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] -

Part #: 24517

Pack of 2

Save on shipping!

You can select smaller lengths and switch from freight to standard shipping and save!

How does selecting smaller lengths reduce shipping costs?

Reducing your order from an oversize item that requires expensive freight services to a smaller bundle makes it eligible for less expensive (and faster!) standard shipping services.

*Material tolerances will remain +/- 0.125".

Best shipping value:

Single Heat Lot Required

Why are heat lots important?

Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

QTY Update

$142.08

$142.08 ea.

Dimensions

Across Flats: 12mm

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Key Features

FREEMTRAvailable

View more product details View more product details

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Sign in to save item

{ "item_id":"24518", "item_brand":"" , "material":"Alloy Steel", "shape":"Bar-Hex", "alloy":"4140", "temper":"", "productionMethod":"Cold Finish", "domesticAndDfars":"/", "stockAvailableIn":"", "marketplaceItem":"false", "customCut":"false" }

13mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] Part # 24518

13mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] -

Part #: 24518

Pack of 2

Save on shipping!

You can select smaller lengths and switch from freight to standard shipping and save!

How does selecting smaller lengths reduce shipping costs?

Reducing your order from an oversize item that requires expensive freight services to a smaller bundle makes it eligible for less expensive (and faster!) standard shipping services.

*Material tolerances will remain +/- 0.125".

Best shipping value:

Single Heat Lot Required

Why are heat lots important?

Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

QTY Update

$160.78

$160.78 ea.

Dimensions

Across Flats: 13mm

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Key Features

FREEMTRAvailable

View more product details View more product details

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Sign in to save item

{ "item_id":"24520", "item_brand":"" , "material":"Alloy Steel", "shape":"Bar-Hex", "alloy":"4140", "temper":"", "productionMethod":"Cold Finish", "domesticAndDfars":"/", "stockAvailableIn":"", "marketplaceItem":"false", "customCut":"false" }

15mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] Part # 24520

15mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] -

Part #: 24520

Pack of 2

Save on shipping!

You can select smaller lengths and switch from freight to standard shipping and save!

How does selecting smaller lengths reduce shipping costs?

Reducing your order from an oversize item that requires expensive freight services to a smaller bundle makes it eligible for less expensive (and faster!) standard shipping services.

*Material tolerances will remain +/- 0.125".

Best shipping value:

Single Heat Lot Required

Why are heat lots important?

Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

QTY Update

$190.52

$190.52 ea.

Dimensions

Across Flats: 15mm

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Key Features

FREEMTRAvailable

View more product details View more product details

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Sign in to save item

{ "item_id":"24522", "item_brand":"" , "material":"Alloy Steel", "shape":"Bar-Hex", "alloy":"4140", "temper":"", "productionMethod":"Cold Finish", "domesticAndDfars":"/", "stockAvailableIn":"", "marketplaceItem":"false", "customCut":"false" }

20mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] Part # 24522

20mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] -

Part #: 24522

Pack of 1

Save on shipping!

You can select smaller lengths and switch from freight to standard shipping and save!

How does selecting smaller lengths reduce shipping costs?

Reducing your order from an oversize item that requires expensive freight services to a smaller bundle makes it eligible for less expensive (and faster!) standard shipping services.

*Material tolerances will remain +/- 0.125".

Best shipping value:

Single Heat Lot Required

Why are heat lots important?

Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

QTY Update

$265.51

$265.51 ea.

Dimensions

Across Flats: 20mm

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Key Features

FREEMTRAvailable

View more product details View more product details

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Sign in to save item

{ "item_id":"24523", "item_brand":"" , "material":"Alloy Steel", "shape":"Bar-Hex", "alloy":"4140", "temper":"", "productionMethod":"Cold Finish", "domesticAndDfars":"/", "stockAvailableIn":"", "marketplaceItem":"false", "customCut":"false" }

22mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] Part # 24523

22mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] -

Part #: 24523

Pack of 1

Save on shipping!

You can select smaller lengths and switch from freight to standard shipping and save!

How does selecting smaller lengths reduce shipping costs?

Reducing your order from an oversize item that requires expensive freight services to a smaller bundle makes it eligible for less expensive (and faster!) standard shipping services.

*Material tolerances will remain +/- 0.125".

Best shipping value:

Single Heat Lot Required

Why are heat lots important?

Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

QTY Update

$276.91

$276.91 ea.

Dimensions

Across Flats: 22mm

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Key Features

FREEMTRAvailable

View more product details View more product details

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Sign in to save item

{ "item_id":"24524", "item_brand":"" , "material":"Alloy Steel", "shape":"Bar-Hex", "alloy":"4140", "temper":"", "productionMethod":"Cold Finish", "domesticAndDfars":"/", "stockAvailableIn":"", "marketplaceItem":"false", "customCut":"false" }

24mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] Part # 24524

24mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] -

Part #: 24524

Pack of 1

Save on shipping!

You can select smaller lengths and switch from freight to standard shipping and save!

How does selecting smaller lengths reduce shipping costs?

Reducing your order from an oversize item that requires expensive freight services to a smaller bundle makes it eligible for less expensive (and faster!) standard shipping services.

*Material tolerances will remain +/- 0.125".

Best shipping value:

Single Heat Lot Required

Why are heat lots important?

Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

QTY Update

$329.48

$329.48 ea.

Dimensions

Across Flats: 24mm

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Key Features

FREEMTRAvailable

View more product details View more product details

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Sign in to save item

{ "item_id":"24525", "item_brand":"" , "material":"Alloy Steel", "shape":"Bar-Hex", "alloy":"4140", "temper":"", "productionMethod":"Cold Finish", "domesticAndDfars":"/", "stockAvailableIn":"", "marketplaceItem":"false", "customCut":"false" }

27mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] Part # 24525

27mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] -

Part #: 24525

Pack of 1

Save on shipping!

You can select smaller lengths and switch from freight to standard shipping and save!

How does selecting smaller lengths reduce shipping costs?

Reducing your order from an oversize item that requires expensive freight services to a smaller bundle makes it eligible for less expensive (and faster!) standard shipping services.

*Material tolerances will remain +/- 0.125".

Best shipping value:

Single Heat Lot Required

Why are heat lots important?

Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

QTY Update

$302.51

$302.51 ea.

Dimensions

Across Flats: 27mm

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Key Features

FREEMTRAvailable

View more product details View more product details

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Sign in to save item

{ "item_id":"24526", "item_brand":"" , "material":"Alloy Steel", "shape":"Bar-Hex", "alloy":"4140", "temper":"", "productionMethod":"Cold Finish", "domesticAndDfars":"/", "stockAvailableIn":"", "marketplaceItem":"false", "customCut":"false" }

30mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] Part # 24526

30mm Alloy Steel Hex Bar 4140 Metric 60" Length [+/- 2"] -

Part #: 24526

Pack of 1

Save on shipping!

You can select smaller lengths and switch from freight to standard shipping and save!

How does selecting smaller lengths reduce shipping costs?

Reducing your order from an oversize item that requires expensive freight services to a smaller bundle makes it eligible for less expensive (and faster!) standard shipping services.

*Material tolerances will remain +/- 0.125".

Best shipping value:

Single Heat Lot Required

Why are heat lots important?

Heat lots ensure consistent metal properties, full traceability, and quality control, which are critical for precision and reliability in your projects.

By selecting "Single Heat Lot Required" option, we ensure all cut pieces are sourced from a single heat lot for consistency in material characteristics.

QTY

QTY Update

$409.41

$409.41 ea.

Dimensions

Across Flats: 30mm

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Key Features

FREEMTRAvailable

View more product details View more product details

View more product details Click for more details

alloy-steel-hex-bar-4140-4142-cold-finish-1superZoom

Sign in to save item

7/8" Alloy Steel Hex Bar 4130-Heat Treated Cold Drawn Condition F - Part # 28780

7/8" Alloy Steel Hex Bar 4130-Heat Treated Cold Drawn Condition F-

Part #: 28780

Pricing and availability for this item changes frequently. Contact us now for a fast quote.

3/4" Alloy Steel Hex Bar 4140 Cold Finish - Part # 27936

3/4" Alloy Steel Hex Bar 4140 Cold Finish-

Part #: 27936

Pricing and availability for this item changes frequently. Contact us now for a fast quote.

1 3/8" Alloy Steel Hex Bar 4140/4142-Cold Finish - Part # 27980

1 3/8" Alloy Steel Hex Bar 4140/4142-Cold Finish-

Part #: 27980

Pricing and availability for this item changes frequently. Contact us now for a fast quote.

Displaying 1 - 25 of 26 results

Results per page

PREVIOUS
1
2
NEXT

Can’t find what you’re looking for? Our team is here to help!

Contact us

Article Hub
Reference Tool & Guide Hub
Video Hub

Metal Weight Calculator
Product Guides
Hardness Conversion Table
Melting Points of Metal
Made With Metals Gallery

Partner Services

Become a Marketplace Seller
Net 30 Credit Terms
W9 Form & ACH Payment Setup

Cookie Preferences
Privacy Policy
Returns & Price Matching
Site Accessibility
Terms & Conditions
Rewards Program
Rewards T&Cs

Careers
Contact Us
Environmental Initiatives
Location & Hours
Our Story
Shipping Process
ISO & Quality
Reviews
Brand Kit
News & Media

Article Hub
Reference Tool & Guide Hub
Video Hub

Weight Calculator
Product Guides
Hardness Conversion Table
Melting Points
Made With Metals Gallery

Partner Services

Become a Marketplace Seller
Net 30 Credit Terms
W9 Form & Vendor Information

onclick="Osano.cm.showDrawer('osano-cm-dom-info-dialog-open')">Cookie Preferences
Privacy Policy
Returns & Price Matching
Site Accessibility
Terms & Conditions
Rewards Program
Rewards T&Cs

Careers
Contact Us
Environmental Initiatives
Locations & Hours
Our Story
Shipping Process
ISO & Quality
Reviews
Brand Kit
News & Media

ALL CONTENT © ONLINEMETALS.COM 1999-2026. ALL RIGHTS RESERVED.

Email: [email protected]

Close

Sign In

OnlineMetals Rewards

A link to reset your password has been sent to your email address.

Follow the instructions in the email to reset your password.

Your password has been updated successfully.

Please use it when signing in below

Sign In to request a quote * Required fields

Email address*

Password*

Password guidelines

Minimum 8 characters
Minimum three character classes must be used from below:
- Uppercase letters (A-Z)
- Lowercase letters (a-z)
- Numbers (0-9)
- Special characters: ~!@$%^&*_-+=`|\(){}[]:;"',.?/

Forgot your password?

Keep me signed in

Keep me "signed in" info

Choosing "Keep me signed in" reduces the number of times you're asked to sign in on this device

To keep your account secure, use this option only on your personal devices.

Don't have an account yet?

Close

Sign In

Welcome,
!

Enter Your Password *

Password guidelines

Minimum 8 characters
Minimum three character classes must be used from below:
- Uppercase letters (A-Z)
- Lowercase letters (a-z)
- Numbers (0-9)
- Special characters: ~!@$%^&*_-+=`|\(){}[]:;"',.?/

Keep me signed in

Keep me "signed in" info

Choosing "Keep me signed in" reduces the number of times you're asked to sign in on this device

To keep your account secure, use this option only on your personal devices.

Continue modifying your quoted cart?

Please note: If you choose to continue modifying your order, you will lose quoted pricing.

Your cart will adjust to regular pricing of our products, as found on our site.
If you wish to go back to your original quoted pricing, it will be available on your quote history page in your account until it expires.

Or

Close

You Have Added QTY to Your Cart

Product Name Part #

Placeholder for future product image

Dimensions

Size:

Go To Cart Continue shopping