Shoulder bolt

Metric shoulder bolts, Stainless steel 18-8 (A-2), 20mm

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

Metric shoulder bolts, Stainless steel 18-8 (A-2), 20mm

Shoulder bolt

Allen

Allen (hex socket) drive is a six-sided recess for use with an allen wrench (hex key).

See also

Socket product

Metric socket screws

Screws with an allen wrench drive.