ISO 4762Socket head (cylindrical)Hexagon socket
ISO 4762 M20 × 50 Socket head (cylindrical)
ISO 4762 M20 × 50 is a socket head cap screw with a 50 mm nominal length, on a M20 × 1.5 mm metric thread. The ISO version of the metric socket head cap screw. Dimensionally very close to DIN 912, with small differences in nominal head height across some sizes.
Diameter20 mm
Length50 mm
Pitch1.5 mm
Socket size s17 mm
Head Ø dk30 mm
HeadSocket head (cylindrical)
DriveHexagon socket
Dimensions
- Standard
- ISO 4762
- Type
- Socket head cap screw
- Size
- M20 × 50
- Thread
- M20 × 1.5
- Length L
- 50 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 ISO 4762. Estimated weight 234.284 g per piece in steel (235.777 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 4762 M20
All M20 specificationsInterchangeability
ISO 4762 is catalogued with DIN 912 as its equivalent designation. Dimensions are compared field by field rather than assumed identical.