Socket head cap screw DIN 912 / ISO 4762, hex socket AF 17, M 20x90, steel 10.9 plain (black)

Where the screw head has to disappear flush into a counterbore, this DIN 912 socket head cap screw works with M 20 and 90 mm length. Head diameter 30.0 mm and head height 20.0 mm define the counterbore, and the tool engages in the AF 17 hex socket. The material is steel 10.9 plain (black).

Benefits

• Dimensions to DIN 912 and ISO 4762, therefore interchangeable with existing M 20 joints.
• The AF 17 hex socket transmits the tightening torque without wrench flats on the head.
• A thread length of at least 52 mm within 90 mm overall length leaves a plain shank section.
• Property class 10.9 allows higher preload than 8.8 at the same size M 20.
• Head diameter 30.0 mm at 20.0 mm head height to DIN 912, matching a cylindrical counterbore.

Applications

• Drive and gearbox engineering
• Clamping fixtures in tool making
• Hydraulic and pneumatic power units
• Highly loaded flange joints

Standards and conformity

Head, AF 17 hex socket and M 20 thread follow DIN 912 in conjunction with ISO 4762. The material is documented as steel 10.9 plain (black).