Description
Overview
DIN7 specifies the dimensional requirements for parallel pins, ensuring reliable interchangeability and engineering performance.
This selected size is specified with diameter M4, thread M4.
Sold in multiples of '1000 pieces. 1 Box = '1000 pieces.
Material, Grade & Strength
Select the material and grade according to the intended load, environment and application.
Finish & Corrosion Protection
Zinc plating provides sacrificial corrosion protection.
Typical Uses
Used in machinery, maintenance, manufacturing, agriculture, mining and general engineering applications.
Technical Tips
- Select the correct size and material for the application.
- Inspect components before installation.
- Follow recognised engineering practices and manufacturer recommendations.
Dimensions – DIN 7980 M4
| Standard | DIN 7980 |
|---|---|
| Product | Spring lock washer for socket cap screws |
| Nominal size | M4 |
| Inside diameter (d1) | 4.1 mm |
| Outside diameter (d2) | 7.1 mm |
| Thickness (s) | 1.2 mm |
| Weight (calculated) | 0.25 kg per 1 000 pieces |
Material, Grade & Strength
| Material | Spring |
|---|
Finish & Corrosion Protection
Zinc plated (clear/blue passivated): Electroplated zinc, typically 5-8 um (ISO 4042). Economical protection for dry indoor and light outdoor use; white rust in neutral salt spray typically from ~24-72 h depending on passivate.
DIN 7980 data sheet – all sizes
| Size | Nominal size | Inside diameter (d1) | Outside diameter (d2) | Thickness (s) |
|---|---|---|---|---|
| M3 | M3 | 3.1 mm | 5.7 mm | 1 mm |
| M4 | M4 | 4.1 mm | 7.1 mm | 1.2 mm |
| M5 | M5 | 5.1 mm | 8.7 mm | 1.6 mm |
| M6 | M6 | 6.1 mm | 11.1 mm | 2 mm |
| M8 | M8 | 8.2 mm | 14.2 mm | 2.5 mm |
| M10 | M10 | 10.2 mm | 17.2 mm | 3 mm |
| M12 | M12 | 12.3 mm | 20.2 mm | 3.5 mm |
| M16 | M16 | 16.3 mm | 26.2 mm | 4.5 mm |
| M20 | M20 | 20.5 mm | 31.2 mm | 5.5 mm |
| M24 | M24 | 24.5 mm | 38.5 mm | 6.5 mm |
Nominal dimensions per DIN 7980. 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
| Measurement Type | Metric |
|---|---|
| Thread Size | M4 |
| Inner Diameter | 4.4 mm |
| Outer Diameter | 7 mm |
| Diameter | M4 |
| Thickness | 2.4 |
| Material | Spring Steel |
| Finish | Zinc Plated |
| Grade | Grade 4.8 |
| Standards Met | DIN 7980 |
| Package Quantity | 1000 |
| Package Type | Box |