Metric Socket Countersunk Screws

A socket screw with a countersunk head requiring a hex key (allen key). The countersunk head is designed to sit in a countersunk hole flush with the material surface. Generally manufactured fully threaded, though occasionally some stock may include a partially threaded shank. Unlike most other types of fastener the length of a countersunk screw is measured overall, including the head. Manufactured conforming with ISO 10642 or DIN 799.