DIN 7984Low socket headHexagon socket
DIN 7984 M4 × 25 Low socket head
DIN 7984 M4 × 25 is a low head socket cap screw with a 25 mm nominal length, on a M4 × 0.7 mm metric thread. Same cylindrical hex socket head as DIN 912 but with roughly half the head height, for assemblies with limited vertical clearance. Lower head means lower permissible preload than a standard DIN 912 of the same size.
Diameter4 mm
Length25 mm
Pitch0.7 mm
Socket size s2.5 mm
Head Ø dk7 mm
HeadLow socket head
DriveHexagon socket
Dimensions
- Standard
- DIN 7984
- Type
- Low head socket cap screw
- Size
- M4 × 25
- Thread
- M4 × 0.7
- Length L
- 25 mm
- Socket size s
- 2.5 mm
- Head diameter dk
- 7 mm
- Head height k
- 2.8 mm
- Drive
- Hexagon socket
- Head
- Low socket head
Nominal values in millimetres as published in DIN 7984. Estimated weight 3.312 g per piece in steel (3.333 g in stainless), calculated from the nominal geometry — real parts vary with tolerance and head chamfers.
Thread data
Full M4 thread pageDesignationM4 × 0.7
Pitch0.7 mm
Major Ø4 mm
Pitch Ø3.55 mm
Minor Ø ext3.14 mm
Tap drillØ 3.3 mm