ISO 4014Hexagon headExternal hexagon
ISO 4014 M20 × 160 Hexagon head
ISO 4014 M20 × 160 is a hexagon head bolt with a 160 mm nominal length, on a M20 × 1.5 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.
Diameter20 mm
Length160 mm
Pitch1.5 mm
Socket size s30 mm
Head height k12.5 mm
HeadHexagon head
DriveExternal hexagon
Dimensions
- Standard
- ISO 4014
- Type
- Hexagon head bolt
- Size
- M20 × 160
- Thread
- M20 × 1.5
- Length L
- 160 mm
- Socket size s
- 30 mm
- Head height k
- 12.5 mm
- Drive
- External hexagon
- Head
- Hexagon head
Nominal values in millimetres as published in ISO 4014. Estimated weight 394.584 g per piece in steel (397.097 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 lengthsISO 4014 M20
All M20 specificationsInterchangeability
ISO 4014 is catalogued with DIN 931 as its equivalent designation. Dimensions are compared field by field rather than assumed identical.