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Socket screws have an allen wrench drive.
Socket caps have a small cylindrical head with tall vertical sides. Allen (hex socket) drive is a six-sided recess for use with an allen wrench (hex key).
The most common stainless steel for general hardware use.
The most common stainless steel for general hardware use. A chemically produced coating that leaves the steel surface with a matte black finish and offers mild corrosion resistance.
A highly corrosion resistant grade of stainless steel. Ideal in salt water and chlorine environments. More expensive than 18-8.
A very high strength heat treated alloy steel. Zinc plated for moderate corrosion resistance.
A chemically produced coating that leaves the steel surface with a matte black finish and offers mild corrosion resistance. A very high strength heat treated alloy steel.
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A low carbon steel for general use. Chrome plated and polished for a mirror like finish.
Flat heads are countersunk (cone shaped under the head) with a flat top. Allen (hex socket) drive is a six-sided recess for use with an allen wrench (hex key).
Zinc plated for moderate corrosion resistance.
Button heads are rounded and low profile. Allen (hex socket) drive is a six-sided recess for use with an allen wrench (hex key).
Screws with an allen wrench drive.
Screws with no head and machine threads for use in a tapped hole.
Screws with an unthreaded shoulder that is larger in diameter than the threads. Also known as stripper bolts.