ISO 10642Countersunk head (90°)Hexagon socket
ISO 10642 M10 × 80 Countersunk head (90°)
ISO 10642 M10 × 80 is a socket countersunk head screw with a 80 mm nominal length, on a M10 × 1.25 mm metric thread. ISO equivalent of DIN 7991. Both use the same 90° countersink angle, so mating holes are interchangeable.
Diameter10 mm
Length80 mm
Pitch1.25 mm
Socket size s6 mm
Head Ø dk20 mm
HeadCountersunk head (90°)
DriveHexagon socket
Dimensions
- Standard
- ISO 10642
- Type
- Socket countersunk head screw
- Size
- M10 × 80
- Thread
- M10 × 1.25
- Length L
- 80 mm
- Socket size s
- 6 mm
- Head diameter dk
- 20 mm
- Head height k
- 6.2 mm
- Thread length b
- 32 mm
- Drive
- Hexagon socket
- Head
- Countersunk head (90°)
Nominal values in millimetres as published in ISO 10642. Estimated weight 58.242 g per piece in steel (58.613 g in stainless), calculated from the nominal geometry — real parts vary with tolerance and head chamfers.
Thread data
Full M10 thread pageDesignationM10 × 1.25 fine
Pitch1.25 mm
Major Ø10 mm
Pitch Ø9.19 mm
Minor Ø ext8.47 mm
Tap drillØ 8.75 mm
Other lengthsISO 10642 M10
All M10 specificationsInterchangeability
ISO 10642 is catalogued with DIN 7991 as its equivalent designation. Dimensions are compared field by field rather than assumed identical.