ISO 7089Flat washer
ISO 7089 M8 Flat washer
ISO 7089 M8 is a flat washer, on a M8 × 1 mm metric thread. The general purpose flat washer. It protects the clamped surface, bridges oversized holes and spreads load under the head or nut.
Diameter8 mm
Pitch1 mm
Inside Ø d18.4 mm
Outside Ø d216 mm
Thickness h1.6 mm
Dimensions
- Standard
- ISO 7089
- Type
- Flat washer
- Size
- M8
- Thread
- M8 × 1
- Total height h
- 1.6 mm
- Inside diameter d1
- 8.4 mm
- Outside diameter d2
- 16 mm
Nominal values in millimetres as published in ISO 7089. Estimated weight 1.829 g per piece in steel (1.841 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 7089 M8
All M8 specificationsInterchangeability
ISO 7089 is catalogued with DIN 125 A as its equivalent designation. Dimensions are compared field by field rather than assumed identical.