Description
Overview
DIN439 specifies the standard dimensions for half nuts, ensuring compatibility with matching metric fasteners.
This selected size is specified with thread M12.
Sold in multiples of '200 pieces. 1 Box = '200 pieces.
Material, Grade & Strength
Select the material and property class to match the mating fastener, clamp load and corrosion environment.
Finish & Corrosion Protection
Choose the finish according to the installation environment and expected corrosion exposure.
Typical Uses
Used throughout machinery, fabrication, mining, agriculture, construction and maintenance with compatible bolts, screws, studs or threaded rod.
Technical Tips
- Match thread size and pitch.
- Use compatible property classes.
- Consider locking methods where vibration is present.
Dimensions – DIN 439 / ISO 4035 M12
| Standard | DIN 439 / ISO 4035 |
|---|---|
| Product | Thin (half/lock) nut |
| Thread | M12 x 1.75 |
| Across flats (s) | 19 mm (ISO: 18 mm) |
| Height (m) | 6 mm |
| Weight (calculated) | 10.1 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 439 data sheet – all sizes
| Size | Thread | Across flats (s) | Height (m) |
|---|---|---|---|
| M3 | M3 x 0.5 | 5.5 mm | 1.8 mm |
| M4 | M4 x 0.7 | 7 mm | 2.2 mm |
| M5 | M5 x 0.8 | 8 mm | 2.7 mm |
| M6 | M6 x 1 | 10 mm | 3.2 mm |
| M8 | M8 x 1.25 | 13 mm | 4 mm |
| M10 | M10 x 1.5 | 17 mm (ISO: 16 mm) | 5 mm |
| M12 | M12 x 1.75 | 19 mm (ISO: 18 mm) | 6 mm |
| M14 | M14 x 2 | 22 mm (ISO: 21 mm) | 7 mm |
| M16 | M16 x 2 | 24 mm | 8 mm |
| M18 | M18 x 2.5 | 27 mm | 9 mm |
| M20 | M20 x 2.5 | 30 mm | 10 mm |
| M22 | M22 x 2.5 | 32 mm (ISO: 34 mm) | 11 mm |
| M24 | M24 x 3 | 36 mm | 12 mm |
| M27 | M27 x 3 | 41 mm | 13.5 mm |
| M30 | M30 x 3.5 | 46 mm | 15 mm |
| M33 | M33 x 3.5 | 50 mm | 16.5 mm |
| M36 | M36 x 4 | 55 mm | 18 mm |
| M42 | M42 x 4.5 | 65 mm | 21 mm |
| M48 | M48 x 5 | 75 mm | 24 mm |
Nominal dimensions per DIN 439 / ISO 4035. 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 | M12 |
| Drive Type | External Hex |
| Head Style | Hex |
| Material | Mild Steel |
| Finish | Zinc Plated |
| Grade | Grade 5 |
| Standards Met | DIN 439 |
| Package Quantity | 200 |
| Package Type | Box |