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The most common stainless steel for general hardware use.
A very high strength heat treated alloy steel. Zinc plated for moderate corrosion resistance.
A very high strength heat treated alloy steel. Black oil (plain) finish.
Screws with an unthreaded shoulder that is larger in diameter than the threads. Also known as stripper bolts.
Socket caps have a small cylindrical head with tall vertical sides. Allen drives are six sided recesses for use with an allen wrench.
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