[5-13-A] Black Oxide Button Head Cap Screw

68 items。🔍 Filter in the interactive catalog

About this category

Black alloy steel button head socket screws - a lower, wider head than a cap screw, rounded so it does not catch, for places with limited height or where a tall head is unwanted. 3-12.7 mm thread, mostly metric with a few inch UNC sizes.

Standards ISO 7380 · DIN 7380

How to choose

• A low head means a shallow socket, so torque capacity is well below a cap screw of the same size.
• The shallow socket also cams out more easily - use the correct key, fully seated.
• For maximum clamp load use a cap screw; for a flush finish use a countersunk socket screw.

Specifications at a glance

This category lists 69 items. Size and material coverage below — all stocked in Taiwan.