ISO 4014Hexagon headExternal hexagon
ISO 4014 M4 × 40 Hexagon head
ISO 4014 M4 × 40 is a hexagon head bolt with a 40 mm nominal length, on a M4 × 0.7 mm metric thread. ISO version of the partial thread hexagon head bolt. The standard thread length is defined by nominal length bands, so long bolts have a proportionally longer plain shank.
Diameter4 mm
Length40 mm
Pitch0.7 mm
Socket size s7 mm
Head height k2.8 mm
HeadHexagon head
DriveExternal hexagon
Dimensions
- Standard
- ISO 4014
- Type
- Hexagon head bolt
- Size
- M4 × 40
- Thread
- M4 × 0.7
- Length L
- 40 mm
- Socket size s
- 7 mm
- Head height k
- 2.8 mm
- Drive
- External hexagon
- Head
- Hexagon head
Nominal values in millimetres as published in ISO 4014. Estimated weight 3.946 g per piece in steel (3.971 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
Other lengthsISO 4014 M4
All M4 specificationsInterchangeability
ISO 4014 is catalogued with DIN 931 as its equivalent designation. Dimensions are compared field by field rather than assumed identical.