Form A Washers – Zinc (DIN 125-A)
Standard zinc plated Form A flat washers for clamping, load spreading and spacing in dry internal environments.
What are Zinc Form A washers used for?
Zinc Form A washers are used to spread load under a bolt or nut, prevent surface damage and improve clamping performance in internal applications.
Manufactured to DIN 125-A, these washers feature a traditional flat Form A profile and are plated in Clear Cr3 Trivalent Zinc (3–5 microns). They are suitable for clean, dry and low humidity environments.
Specifications
| Standard | DIN 125-A |
| Finish | Zinc & Clear Cr3 |
| Corrosion Rating (1–5) | 1 – Clean, dry & low humidity environments |
| Profile | Form A – Standard Flat Washer |
Washer Size to Bolt Size Guide
| Washer Size | To Suit Bolt | Common Uses |
|---|---|---|
| M4 | M4 Bolt | Light brackets and small fixings |
| M5 | M5 Bolt | Electrical and light steel fittings |
| M6 | M6 Bolt | Furniture and light machinery |
| M8 | M8 Bolt | General construction and timber joints |
| M10 | M10 Bolt | Fencing and structural timber |
| M12 | M12 Bolt | Heavy timber clamping |
| M16 | M16 Bolt | Structural steel applications |
| M20 | M20 Bolt | High-load assemblies |
Are Zinc Form A washers suitable for outdoor use?
No. With a corrosion rating of 1, zinc plated Form A washers are designed for internal use only. For external or damp environments, choose Stainless Steel Form A washers.
Typical Applications
- Internal construction work
- Timber-to-timber clamping
- Mechanical assembly
- Workshop and fabrication projects
- Sheltered installations


