Flat Washer (DIN 125 / ISO 7089)
DIN 125 flat washers are the standard general-purpose washer, used to distribute clamping load and protect the surface under a bolt head or nut. OD is approximately 2 × bolt diameter.
Specifications
| Standards | DIN 125 A (chamfered), DIN 125 B (no chamfer), ISO 7089 |
|---|---|
| Size Range | M3 – M48 |
| Thickness | Per standard, typically 0.3 – 4 mm depending on size |
| Material | Carbon steel, Stainless 304/316 |
| Surface Finish | Plain, Zinc plated, HDG, Stainless |
Frequently Asked Questions
DIN 125 vs ISO 7089 — are they the same?
Very close but not identical. ISO 7089 has slightly different OD on a few sizes than DIN 125. For most applications they are interchangeable. ISO 7089 is the international successor.
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