1/2-13X4 SST CAP SCREW [25/BOX]

1/2-13X4 SST CAP SCREW [25/BOX]

Head Cap Screws (also known as Allen head screws) have a cylindrically shaped head with a flat top, knurled cylindrical sides and an internal hexagonal drive recess, often called an Allen or Hex drive. Socket Head Cap Screws have a compact head design making them ideal for use in tight or confined spaces.