DIN 916HeadlessHexagon socket
DIN 916 M12 × 40 Headless
DIN 916 M12 × 40 is a socket set screw, cup point with a 40 mm nominal length, on a M12 × 1.5 mm metric thread. A headless grub screw with a cupped end that digs into the shaft. Common for locking collars, pulleys and knobs onto shafts.
Diameter12 mm
Length40 mm
Pitch1.5 mm
Socket size s6 mm
HeadHeadless
DriveHexagon socket
Dimensions
- Standard
- DIN 916
- Type
- Socket set screw, cup point
- Size
- M12 × 40
- Thread
- M12 × 1.5
- Length L
- 40 mm
- Socket size s
- 6 mm
- Drive
- Hexagon socket
- Head
- Headless
Nominal values in millimetres as published in DIN 916. Estimated weight 35.513 g per piece in steel (35.739 g in stainless), calculated from the nominal geometry — real parts vary with tolerance and head chamfers.
Thread data
Full M12 thread pageDesignationM12 × 1.5 fine
Pitch1.5 mm
Major Ø12 mm
Pitch Ø11.03 mm
Minor Ø ext10.16 mm
Tap drillØ 10.5 mm
Other lengthsDIN 916 M12
All M12 specificationsInterchangeability
DIN 916 is catalogued with ISO 4029 as its equivalent designation. Dimensions are compared field by field rather than assumed identical.