ISO 2009Countersunk head (90°)Slotted
ISO 2009 M8 × 20 Countersunk head (90°)
ISO 2009 M8 × 20 is a countersunk head screw with a 20 mm nominal length, on a M8 × 1 mm metric thread. ISO equivalent of DIN 963, same 90° countersink.
Diameter8 mm
Length20 mm
Pitch1 mm
Head Ø dk14.5 mm
Head height k4 mm
HeadCountersunk head (90°)
DriveSlotted
Dimensions
- Standard
- ISO 2009
- Type
- Countersunk head screw
- Size
- M8 × 20
- Thread
- M8 × 1
- Length L
- 20 mm
- Head diameter dk
- 14.5 mm
- Head height k
- 4 mm
- Drive
- Slotted
- Head
- Countersunk head (90°)
Nominal values in millimetres as published in ISO 2009. Estimated weight 11.1 g per piece in steel (11.17 g in stainless), calculated from the nominal geometry — real parts vary with tolerance and head chamfers.
Thread data
Full M8 thread pageDesignationM8 × 1 fine
Pitch1 mm
Major Ø8 mm
Pitch Ø7.35 mm
Minor Ø ext6.77 mm
Tap drillØ 7 mm
Other lengthsISO 2009 M8
All M8 specificationsInterchangeability
ISO 2009 is catalogued with DIN 963 as its equivalent designation. Dimensions are compared field by field rather than assumed identical.