Meets ASME/ANSI B18.3 and B18.3M Note: Although low head cap screws are made of the same material as the standard cap screw, socket dimensions prevent it from being preloaded to the same level as the standard cap screw.

Closely controlled fillet between head and body for maximum fatigue strength.

This is a common type of fastener, usually used in industrial equipment and also in high-pressure hydraulic systems. For larger sizes head angle shall be 62°/60°. A unique, malleable and strong captive 'O' ring sits in the groove just below the cap head. This kind of head design enables the socket cap screws to be easily driven and removed by a suitable hex key or hand.

Usually carbon steel weakens due to the mositure, as rust is formed, thereby eating away the material of the latch. As compared to ordinary fasteners, less socket screws of the same size can achieve the same clamping force in a joint. Our hex head screws are available in numerous sizes, shapes, and grades.

Socket head cap screws have a flat faced, circular raised head with an indented hex socket.

Bs en iso 4762 din 912 fasteners