DIN 912Socket head (cylindrical)Hexagon socket
DIN 912 M20 × 100 Socket head (cylindrical)
DIN 912 M20 × 100 is a socket head cap screw with a 100 mm nominal length, on a M20 × 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.
Diameter20 mm
Length100 mm
Pitch1.5 mm
Socket size s17 mm
Head Ø dk30 mm
HeadSocket head (cylindrical)
DriveHexagon socket
Dimensions
- Standard
- DIN 912
- Type
- Socket head cap screw
- Size
- M20 × 100
- Thread
- M20 × 1.5
- Length L
- 100 mm
- Socket size s
- 17 mm
- Head diameter dk
- 30 mm
- Head height k
- 20 mm
- Thread length b
- 52 mm
- Drive
- Hexagon socket
- Head
- Socket head (cylindrical)
Nominal values in millimetres as published in DIN 912. Estimated weight 357.592 g per piece in steel (359.869 g in stainless), calculated from the nominal geometry — real parts vary with tolerance and head chamfers.
Thread data
Full M20 thread pageDesignationM20 × 1.5 fine
Pitch1.5 mm
Major Ø20 mm
Pitch Ø19.03 mm
Minor Ø ext18.16 mm
Tap drillØ 18.5 mm
Other lengthsDIN 912 M20
All M20 specificationsInterchangeability
DIN 912 is catalogued with ISO 4762 as its equivalent designation. Dimensions are compared field by field rather than assumed identical.