Description
Overview
DIN6334 specifies the dimensions for coupling nuts, ensuring compatibility and reliable engineering performance.
This selected size is specified with thread M20.
Sold in multiples of '100 pieces. 1 Box = '100 pieces.
Material, Grade & Strength
Select the material and strength to suit the application, environment and mating components.
Finish & Corrosion Protection
Choose the finish according to the corrosion exposure and service environment.
Typical Uses
Suitable for machinery, maintenance, construction, mining, agriculture and general engineering.
Technical Tips
- Use compatible mating components.
- Inspect parts before installation.
- Follow recognised engineering practices.
Dimensions – DIN 6334 M20
| Standard | DIN 6334 |
|---|---|
| Product | Hexagon coupling nut (3d) |
| Thread | M20 x 2.5 |
| Across flats (s) | 30 mm |
| Length (l = 3d) | 60 mm |
| Weight (calculated) | 235.45 kg per 1 000 pieces |
Material, Grade & Strength
| Material | Mild steel (grade 4.6/4.8) |
|---|---|
| Nut property class | 5 (6 for DIN 985 nyloc) (ISO 898-2) |
| Use with bolts of class | 4.6, 4.8 and 5.8 |
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 6334 data sheet – all sizes
| Size | Thread | Across flats (s) |
|---|---|---|
| M5 | M5 x 0.8 | 8 mm |
| M6 | M6 x 1 | 10 mm |
| M8 | M8 x 1.25 | 13 mm |
| M10 | M10 x 1.5 | 17 mm |
| M12 | M12 x 1.75 | 19 mm |
| M14 | M14 x 2 | 22 mm |
| M16 | M16 x 2 | 24 mm |
| M18 | M18 x 2.5 | 27 mm |
| M20 | M20 x 2.5 | 30 mm |
| M24 | M24 x 3 | 36 mm |
| M30 | M30 x 3.5 | 46 mm |
Nominal dimensions per DIN 6334. 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 | M20 |
| Inner Diameter | 20 |
| Outer Diameter | 30 |
| Height | 60 |
| Material | Mild Steel |
| Finish | Zinc Plated |
| Grade | Grade 4.6 |
| Standards Met | DIN 6334 |
| Package Quantity | 100 |
| Package Type | Box |