12-24 Square Machine Screw Nut 18 8 Stainless Steel (Pack Qty 2,500) BC-12NQ188

Requires a greater amount of torque to loosen than to tighten the nut. Will span oversized or poorly aligned holes. Flange provides a more uniform bearing-stress to clamp-force ratio than other low carbon lock nuts. Does not gall screw threads. Steel: Nuts shall be made from a carbon steel which conforms to the following chemical composition requirements Carbon: 0.47% max.; Phosphorus: 0.12% max.; Sulfur: 0.23% max. Stainless: 18-8 stainless steel