Class 10.9 plain steel bolts are high-strength metric fasteners equivalent to Grade 8 imperial bolts. Manufactured from quenched and tempered boron or alloy steel, they are engineered to provide high tensile strength and excellent fatigue resistance in heavy-duty mechanical assemblies. The "plain" finish is the raw, oily surface resulting from the heat-treatment process, providing no additional corrosion protection but allowing for better weldability or paint adhesion. These bolts are a standard requirement in the automotive industry for engine components, suspension systems, and transmission assemblies, as well as in structural steel construction where high clamping force is essential.
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Please note that this data is to be used ONLY FOR REFERENCE, NOT FOR DESIGN, and by using it,you agree that any decisions you make regarding materials for your project are at your own discretion.
Thread
M5
Thread Type
Full Thread
Head Width
8mm
Head Height
3.5mm
Pitch
0.8
Length
25mm
Metal Type
Steel
Shape
Fastener
Brand
K-Mac Distribution
Fastener Type
Bolt
Weight/Lineal Foot
0.046 pounds
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