Socket head cap screw DIN 912 / ISO 4762, hex socket AF 17, M 20x70, steel 12.9 plain (black)

In machine and fixture building this DIN 912 socket head cap screw holds parts together with M 20 and 70 mm length. It is fitted with an AF 17 hex key, and the head stays slim at 30.0 mm diameter. The material is steel 12.9 plain (black).

Benefits

• The thread running nearly up to the head uses the full length of 70 mm for engagement.
• Property class 12.9 offers the highest strength in this range at the same size M 20.
• The AF 17 hex socket transmits the tightening torque without wrench flats on the head.
• Size M 20 transmits high clamping forces, and the AF 17 hex socket takes the required tightening torque.
• Head diameter 30.0 mm at 20.0 mm head height to DIN 912, matching a cylindrical counterbore.

Applications

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

Standards and conformity

The screw is dimensioned to DIN 912 and ISO 4762, which allows replacement of like-for-like parts in M 20. The material is stated as steel 12.9 plain (black).