ISO 10642Countersunk head (90°)Hexagon socket
ISO 10642 M20 × 35 Countersunk head (90°)
ISO 10642 M20 × 35 is a socket countersunk head screw with a 35 mm nominal length, on a M20 × 1.5 mm metric thread. ISO equivalent of DIN 7991. Both use the same 90° countersink angle, so mating holes are interchangeable.
Diameter20 mm
Length35 mm
Pitch1.5 mm
Socket size s14 mm
Head Ø dk36 mm
HeadCountersunk head (90°)
DriveHexagon socket
Dimensions
- Standard
- ISO 10642
- Type
- Socket countersunk head screw
- Size
- M20 × 35
- Thread
- M20 × 1.5
- Length L
- 35 mm
- Socket size s
- 14 mm
- Head diameter dk
- 36 mm
- Head height k
- 11 mm
- Thread length b
- 52 mm
- Drive
- Hexagon socket
- Head
- Countersunk head (90°)
Nominal values in millimetres as published in ISO 10642. Estimated weight 140.932 g per piece in steel (141.83 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 10642 M20
All M20 specificationsInterchangeability
ISO 10642 is catalogued with DIN 7991 as its equivalent designation. Dimensions are compared field by field rather than assumed identical.