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Flat Washers
Large-OD flat washer to DIN 9021 / ISO 7093 with an outside diameter of about three times the bolt size — spreads load over timber, slotted holes and thin sheet.
| Bolt | ID d1 (mm) | OD d2 (mm) | Thickness h (mm) |
|---|---|---|---|
| M5 | 5.3 | 15 | 1.2 |
| M6 | 6.4 | 18 | 1.6 |
| M8 | 8.4 | 24 | 2.0 |
| M10 | 10.5 | 30 | 2.5 |
| M12 | 13 | 37 | 3.0 |
| M16 | 17 | 50 | 3.0 |
| M20 | 22 | 60 | 4.0 |
Nominal values in mm for reference. Final dimensions and tolerances follow the referenced standard.
| Finish | Applied | Notes |
|---|---|---|
| Zinc plated | Our own line | Clear/blue, yellow or black passivation |
| Zinc-nickel | Our own line | 12–15 µm, clear or black passivation; 1,000 h (12 µm) to 1,440 h (15 µm) neutral salt spray |
| Hot-dip galvanized | Available | ISO 10684 / ASTM F2329; nuts tapped oversize to suit |
| Plain | Available | For customer-side coating |
For property class 10.9 and above, choose zinc flake, or zinc-nickel with hydrogen-embrittlement relief agreed at order stage.
Tell us size, grade, finish and quantity. We reply with price and lead time within 24 hours.
