Steel heavy jam hex nuts are low-profile, high-strength fasteners used primarily in tight spaces or as a locking mechanism. While they feature the increased width across the flats of a "heavy" nut to provide a larger bearing surface, they are significantly thinner than a standard heavy hex nut. This allows them to be tightened against a primary nut to "jam" the threads, effectively preventing loosening due to vibration or rotation. Commonly used in heavy machinery, automotive assemblies, and industrial piping, these nuts are manufactured from durable carbon steel to handle high-stress loads. Their thin profile makes them indispensable for applications with limited bolt thread clearance where a full-sized heavy nut would not fit. To ensure long-term performance, they are often available in various finishes, such as zinc plating or hot-dip galvanization, to provide essential protection against rust and environmental wear.
Return Non-returnable
Thread
7/16"-14
Width
3/4
Metal Type
Steel
Shape
Fastener
Grade
Grade 2
Brand
K-Mac Distribution
Fastener Type
Hex Nut
Type
Heavy Jam
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