Socket head cap screws, DIN 912
Screws
Socket head cap screws to DIN 912 and ISO 4762 are the fastener most often used in machine building: the cylindrical head sits inside a counterbore, the tightening torque runs through the hexagon socket. This category lists 924 versions, threads from M 6 to M 12 and lengths from 16 to 140 mm.
Selection follows thread, length, property class and material. Available are zinc plated steel in 8.8, plain steel in 12.9 as well as stainless A2. The socket size matches the thread, 5 mm on M 6, 8 mm on M 10 and 10 mm on M 12.
Socket head cap screws to DIN 912 join housings, flanges, bearing covers and jig plates. The head sits below the surface, so the face stays flush and adjacent parts run free. Class 12.9 is chosen for high preload, stainless A2 on plant exposed to moisture or frequent cleaning.
