Socket head screw

Metric socket cap

Socket screws have an allen wrench drive.

Metric socket cap

Socket head screw

Socket cap

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).

  • Stainless steel 18-8 (A-2)
  • Stainless steel 316 (A-4)
  • Stainless steel 17-4 PH
  • Zinc plated class 12.9 alloy steel
  • Class 12.9 alloy steel black oxide finish
Socket head screw (smooth)

Socket cap (smooth)

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).

  • Chrome plated steel

See also

Set screw

Metric set screws

Screws with no head and machine threads for use in a tapped hole.

Shoulder bolt

Metric shoulder bolts

Screws with an unthreaded shoulder that is larger in diameter than the threads. Also known as stripper bolts.