Description
Overview
Washers distribute load, protect mating surfaces, improve seating and support locking or sealing depending on the washer type. The correct washer should match the fastener diameter and the joint function.
This selected size is specified with diameter M12, thread M12.
Sold in multiples of '200 pieces. 1 Box = '200 pieces.
Material, Grade & Strength
The material and grade should be matched to the load, environment and mating components used in the assembly.
Finish & Corrosion Protection
Plain finish has no plated corrosion protection and is best used in protected, oiled, painted or indoor environments.
Typical Uses
Washers are used under bolt heads and nuts to spread load, protect surfaces, improve seating and provide locking or sealing support depending on the washer type.
Technical Tips
- Match the washer inside diameter to the fastener size.
- Use flat washers for load spreading and surface protection.
- Use spring, toothed or lock washers only where their locking function is appropriate.
- Use bonded washers where sealing against water ingress is required.
Selection Advice
Select the product by matching the thread, size, material, finish and function to the assembly. Avoid choosing only by appearance or a partial part number.
Dimensions – DIN 6916 / ISO 7416 M12
| Standard | DIN 6916 / ISO 7416 |
|---|---|
| Product | Hardened structural washer (HV 300-370) |
| Nominal size | M12 |
| Inside diameter (d1) | 13 mm |
| Outside diameter (d2) | 24 mm |
| Thickness (h) | 3 mm |
| Weight (calculated) | 7.53 kg per 1 000 pieces |
Material, Grade & Strength
| Material | High tensile alloy steel, property class 10.9 |
|---|---|
| Hardness | 300-370 HV (through hardened) |
Finish & Corrosion Protection
Plain / self colour: No applied coating. Stainless, brass and nylon parts are supplied plain; plain steel parts need oil, paint or protected environments.
DIN 6916 data sheet – all sizes
| Size | Nominal size | Inside diameter (d1) | Outside diameter (d2) | Thickness (h) |
|---|---|---|---|---|
| M12 | M12 | 13 mm | 24 mm | 3 mm |
| M16 | M16 | 17 mm | 30 mm | 4 mm |
| M20 | M20 | 21 mm | 37 mm | 4 mm |
| M22 | M22 | 23 mm | 39 mm | 4 mm |
| M24 | M24 | 25 mm | 44 mm | 4 mm |
| M27 | M27 | 28 mm | 50 mm | 5 mm |
| M30 | M30 | 31 mm | 56 mm | 5 mm |
| M36 | M36 | 37 mm | 66 mm | 6 mm |
Nominal dimensions per DIN 6916 / ISO 7416. Weights are calculated from nominal dimensions and are a guide only (±10%). Values for fit and strength should be confirmed against the standard for critical applications.
Specifications
| Thread Size | M12 |
|---|---|
| Inner Diameter | 13 |
| Outer Diameter | 24 |
| Diameter | M12 |
| Thickness | 2.5 |
| Material | Hi - Tensile Steel |
| Finish | Plain |
| Grade | Grade 10 |
| Standards Met | DIN 6916 |
| Package Quantity | 200 |
| Package Type | Box |