Collection: Button Head Cap Screws

Button head cap screws have a low, rounded head with a hex socket drive. They follow ISO 7380 and are used where a smooth, low profile head looks neater or leaves less to catch on, such as guards, covers and panels.

Our range is grade 10.9, which under ISO 898-1 has a nominal tensile strength of 1000 MPa. Sizes run from M3 to M12, lengths from 4 mm to 70 mm, in bare, zinc plated, Enviropass Black and black zinc passivated finishes. Flanged button heads are also stocked, with a wider bearing face that spreads the load.

The low head takes less tightening torque than a full socket head cap screw, so use Socket Head Cap Screws where the joint carries heavy loads. For corrosive areas, see Stainless Steel Button Head Cap Screws.