The Flat Head Cap Screw is M4 metric with a total length of 10mm. The threaded portion is 8mm long, the head measures 2mm thick with a diameter of 7mm. These black oxide screws have been heat-treated for hardness, which results in a dark surface colour. These screws can be used to secure front or back springs to your machine frame or armature bar.

Each Cap screw is sold as a single unit.