Socket products was be extensive used in hardware.Socket screws have an allen wrench drive.A small cylindrical head with tall vertical sides and a six sided recess for an allen wrench.A small cylindrical head with tall vertical sides and a six sided recess for an allen wrench.A countersunk head (cone shaped under the head) with a flat top and a six sided recess for an allen wrench.A low profile rounded head with a six sided recess for an allen wrench.

SPOTLIGHT!

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