DIN 912Socket head (cylindrical)Hexagon socket
DIN 912 M2.5 × 20 Socket head (cylindrical)
DIN 912 M2.5 × 20 is a socket head cap screw with a 20 mm nominal length, on a M2.5 × 0.45 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.
Diameter2.5 mm
Length20 mm
Pitch0.45 mm
Socket size s2 mm
Head Ø dk4.5 mm
HeadSocket head (cylindrical)
DriveHexagon socket
Dimensions
- Standard
- DIN 912
- Type
- Socket head cap screw
- Size
- M2.5 × 20
- Thread
- M2.5 × 0.45
- Length L
- 20 mm
- Socket size s
- 2 mm
- Head diameter dk
- 4.5 mm
- Head height k
- 2.5 mm
- Thread length b
- 17 mm
- Drive
- Hexagon socket
- Head
- Socket head (cylindrical)
Nominal values in millimetres as published in DIN 912. Estimated weight 1.083 g per piece in steel (1.09 g in stainless), calculated from the nominal geometry — real parts vary with tolerance and head chamfers.
Thread data
Full M2.5 thread pageDesignationM2.5 × 0.45
Pitch0.45 mm
Major Ø2.5 mm
Pitch Ø2.21 mm
Minor Ø ext1.95 mm
Tap drillØ 2.05 mm
Other lengthsDIN 912 M2.5
All M2.5 specificationsInterchangeability
DIN 912 is catalogued with ISO 4762 as its equivalent designation. Dimensions are compared field by field rather than assumed identical.