DIN 125 AFlat washer
DIN 125 A M4 Flat washer
DIN 125 A M4 is a flat washer, on a M4 × 0.7 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.
Diameter4 mm
Pitch0.7 mm
Inside Ø d14.3 mm
Outside Ø d29 mm
Thickness h0.8 mm
Dimensions
- Standard
- DIN 125 A
- Type
- Flat washer
- Size
- M4
- Thread
- M4 × 0.7
- Total height h
- 0.8 mm
- Inside diameter d1
- 4.3 mm
- Outside diameter d2
- 9 mm
Nominal values in millimetres as published in DIN 125 A. Estimated weight 0.308 g per piece in steel (0.31 g in stainless), calculated from the nominal geometry — real parts vary with tolerance and head chamfers.
Thread data
Full M4 thread pageDesignationM4 × 0.7
Pitch0.7 mm
Major Ø4 mm
Pitch Ø3.55 mm
Minor Ø ext3.14 mm
Tap drillØ 3.3 mm
Other lengthsDIN 125 A M4
All M4 specificationsInterchangeability
DIN 125 A is catalogued with ISO 7089 as its equivalent designation. Dimensions are compared field by field rather than assumed identical.