DIN 912Socket head (cylindrical)Hexagon socket
DIN 912 M18 × 50 Socket head (cylindrical)
DIN 912 M18 × 50 is a socket head cap screw with a 50 mm nominal length, on a M18 × 1.5 mm metric thread. A cap screw with a cylindrical head and internal hex drive. Because the head sits above the surface and the drive is recessed, it can be tightened hard and used in counterbores for a flush finish.
Diameter18 mm
Length50 mm
Pitch1.5 mm
Socket size s14 mm
Head Ø dk27 mm
HeadSocket head (cylindrical)
DriveHexagon socket
Dimensions
- Standard
- DIN 912
- Type
- Socket head cap screw
- Size
- M18 × 50
- Thread
- M18 × 1.5
- Length L
- 50 mm
- Socket size s
- 14 mm
- Head diameter dk
- 27 mm
- Head height k
- 18 mm
- Thread length b
- 48 mm
- Drive
- Hexagon socket
- Head
- Socket head (cylindrical)
Nominal values in millimetres as published in DIN 912. Estimated weight 180.781 g per piece in steel (181.933 g in stainless), calculated from the nominal geometry — real parts vary with tolerance and head chamfers.
Thread data
Full M18 thread pageDesignationM18 × 1.5 fine
Pitch1.5 mm
Major Ø18 mm
Pitch Ø17.03 mm
Minor Ø ext16.16 mm
Tap drillØ 16.5 mm
Other lengthsDIN 912 M18
All M18 specificationsInterchangeability
DIN 912 is catalogued with ISO 4762 as its equivalent designation. Dimensions are compared field by field rather than assumed identical.