5/16-18 x 2 1/2 Serrated Hex Flanged Washer Full Thread Screw Case Hard Zinc NH316 It is used to secure

It is used to secure two pieces of metal together by spot welding

These sems screws are commonly used in metal

and a zinc coating

These 12-24 x 1 1/4 Phillips Oval Head Machine Screws are fully threaded and made of zinc

this tee nut features a 10-24 thread size and a 7/16-inch diameter

5/16-18 x 2 1/2 Serrated Hex Flanged Washer Full Thread Screw Case Hard Zinc NH316 It is used to secureThis 5 16 18 x 2 1 2" Serrated Hex Flanged Washer Full Thread Screw is made of case hardened steel and zinc plated for corrosion resistance. It has a serrated hex flange head that provides a secure grip and prevents the screw from loosening. The full thread design allows for maximum holding power. This screw is ideal for use in a variety of applications, including metalworking, construction, and automotive repair.