The Hillman Group the Hillman Group 3877 10-24 X 1/2 in. Button Head Socket Cap Screw (20-Pack)
A button head cap screw is an externally threaded fastener with unified threads. It has a cylindrical head with a flat chamfered top surface. Not only that but it has knurled cylindrical sides and a hexagonal recess.
Referencia interna:
40003877E