DIN 125 AFlat washer
DIN 125 A M18 Flat washer
DIN 125 A M18 is a flat washer, on a M18 × 1.5 mm metric thread. DIN version of the plain flat washer. Form A is the standard 140 HV hardness range, which is lower than the 200 HV of the ISO series.
Diameter18 mm
Pitch1.5 mm
Inside Ø d119 mm
Outside Ø d234 mm
Thickness h3 mm
Dimensions
- Standard
- DIN 125 A
- Type
- Flat washer
- Size
- M18
- Thread
- M18 × 1.5
- Total height h
- 3 mm
- Inside diameter d1
- 19 mm
- Outside diameter d2
- 34 mm
Nominal values in millimetres as published in DIN 125 A. Estimated weight 14.704 g per piece in steel (14.798 g in stainless), calculated from the nominal geometry — real parts vary with tolerance and head chamfers.
Thread data
Full M18 thread pageDesignationM18 × 1.5 fine
Pitch1.5 mm
Major Ø18 mm
Pitch Ø17.03 mm
Minor Ø ext16.16 mm
Tap drillØ 16.5 mm
Other lengthsDIN 125 A M18
All M18 specificationsInterchangeability
DIN 125 A is catalogued with ISO 7089 as its equivalent designation. Dimensions are compared field by field rather than assumed identical.