5/16-24 x 1/2 Inch Fine Black Oxide Heat-Treated Alloy Steel Cup Point Socket Head Set Screw USA Best Seller Light-duty Blaircutters are annular cutting

Light-duty Blaircutters are annular cutting tools that cut around the edge of the hole and eject the center as a slug

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5/16-24 x 1/2 Inch Fine Black Oxide Heat-Treated Alloy Steel Cup Point Socket Head Set Screw USA Best Seller Light-duty Blaircutters are annular cuttingCup point set screws feature a hex drive at one end and a cup shaped indentation at the other. The most commonly used set screw head style the thin edge of the cup end digs into the contact surface for high holding power. It is useful for fast permanent and semi permanent placement in applications where some indentation left by the cup end is acceptable.