ISO 7089Flat washer
ISO 7089 M22 Flat washer
ISO 7089 M22 is a flat washer, on a M22 × 2.5 mm metric thread. The general purpose flat washer. It protects the clamped surface, bridges oversized holes and spreads load under the head or nut.
Diameter22 mm
Pitch2.5 mm
Inside Ø d123 mm
Outside Ø d239 mm
Thickness h3 mm
Dimensions
- Standard
- ISO 7089
- Type
- Flat washer
- Size
- M22
- Thread
- M22 × 2.5
- Total height h
- 3 mm
- Inside diameter d1
- 23 mm
- Outside diameter d2
- 39 mm
Nominal values in millimetres as published in ISO 7089. Estimated weight 18.348 g per piece in steel (18.465 g in stainless), calculated from the nominal geometry — real parts vary with tolerance and head chamfers.
Thread data
Full M22 thread pageDesignationM22 × 2.5
Pitch2.5 mm
Major Ø22 mm
Pitch Ø20.38 mm
Minor Ø ext18.93 mm
Tap drillØ 19.5 mm
Other lengthsISO 7089 M22
All M22 specificationsInterchangeability
ISO 7089 is catalogued with DIN 125 A as its equivalent designation. Dimensions are compared field by field rather than assumed identical.