Flat Washers (DIN 125 / ISO 7089)
Standard flat round washers manufactured to DIN 125 and ISO 7089 standards. Designed to distribute the load of a threaded fastener and prevent damage to surfaces. Essential component for any bolting assembly.
Technical Specifications
| Parameter | Specification |
|---|---|
| Standard | DIN 125, ISO 7089 |
| Washer Type | Flat, Round, Type A (medium series) |
| Size Range | M3 – M48 |
| Material | Carbon Steel (C1010/C1022), Stainless Steel 304/316, Brass, Copper, Aluminum |
| Surface Finish | Zinc Plated, Hot-Dip Galvanized, Passivated, Plain |
| Hardness | HV 140-250 (standard), HV 300+ (hardened) |
| Inside Diameter | 3.2mm – 49mm (nominal + clearance) |
| Outside Diameter | 7mm – 92mm |
| Thickness | 0.5mm – 8mm |
| Temperature Range | -60°C to +200°C (steel), -200°C to +800°C (stainless) |
| MOQ | 10,000 pcs (M3-M12), 5,000 pcs (M14+) |
| Lead Time | 5-10 days (standard), 15-20 days (custom) |
| Packaging | Bulk in cartons / Plastic bags / Custom labeling |
Available Variants
- DIN 125 Type A: Medium series, standard thickness
- DIN 125 Type B: Large outside diameter (DIN 9021)
- DIN 125 Type C: Chamfered edges
- Hardened Washers: HV 300-450 for structural bolting
Available Sizes
M3, M4, M5, M6, M8, M10, M12, M14, M16, M18, M20, M22, M24, M27, M30, M33, M36, M42, M48
Applications
- Load distribution under bolt heads and nuts
- Surface protection against scratching
- Vibration dampening
- Electrical insulation (with insulating washers)
- Sealing applications (with bonded seals)
- Structural steel connections
Certifications
ISO 9001:2015 certified. Material certificates (EN 10204 3.1) available. RoHS and REACH compliant.
Frequently Asked Questions
When should I use a large OD washer instead of a standard DIN 125?
Large outside diameter washers (Type B, DIN 9021) spread the clamp load over a bigger area. Use them on soft materials — timber, plastic, thin sheet — where a standard washer would pull through or crush the surface.
What sizes are available?
Available sizes range from M3 – M48. Contact us with your required sizes and quantities for a quick quote.
What is the MOQ and lead time?
The MOQ is 10,000 pcs (M3-M12), 5,000 pcs (M14+). Lead time is 5-10 days (standard), 15-20 days (custom). Mixed-size containers and larger orders are negotiable — send us your requirement for a quick quote.
Do you provide material certificates?
Yes. Material test certificates per EN 10204 3.1 are available on request, and our manufacturing is ISO 9001:2015 certified. RoHS and REACH compliance documentation can also be provided.