DIN 6334 Hex Coupling Nuts
DIN 6334 hexagon coupling nuts 3d are standard fasteners manufactured in accordance with the German industrial standard DIN 6334. They feature an elongated design with length approximately three times the nominal diameter (3d), designed for connecting and extending threaded rods, studs, and bolts in mechanical assemblies, construction, and industrial applications.
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Product introduction
DIN 6334 hexagon coupling nuts 3d are standard fasteners manufactured in accordance with the German industrial standard DIN 6334. They feature an elongated design with length approximately three times the nominal diameter (3d), designed for connecting and extending threaded rods, studs, and bolts in mechanical assemblies, construction, and industrial applications.
Common Specifications
| Materials | Carbon steel |
| Class | 5, 6, 8, 10, 12 |
| Range | M6 - M36 |
| Thread | Coarse , Fine, Extra Fine, Special-Fine |
| Surface | Plain, zinc plated, hot-dip galvanized, GEOMET, ZINC-NICKLE, DACROMATE etc. |
Key Features
- 3d total height for maximum thread engagement
- Continuous internal thread through full length
- Designed for connecting threaded rods end-to-end
- Conforms to DIN 6334 specifications
Application industry
- Mechanical Manufacturing & Heavy Industry
- Construction Engineering & Vertical Elevator
- Hardware Accessories & Home Furnishing
- Medical Devices & Fitness Equipment
- Farm Machinery & Outdoor/Marine Engineering
data table
| Size | M3 | M4 | M5 | M6 | M8 | M10 | M12 | M14 | M16 | M18 | M20 | M22 | M24 | M27 | M30 | M36 |
| Coase | 0.5 | 0.7 | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2 | 2.5 | 2.5 | 2.5 | 3 | 3 | 3.5 | 4 |
| Fine | 0.35 | 0.5 | 0.5 | 0.75 | 1 | 1.25 | 1.5 | 1.5 | 1.5 | 2 | 2 | 2 | 2 | 2 | 3 | 3 |
| Extra Fine | 0.75 | 1 | 1.25 | 1 | 1 | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 2 | 2 | ||||
| s Min (mm) | 5.32 | 6.78 | 7.78 | 9.78 | 12.73 | 16.73 | 18.67 | 21.67 | 23.67 | 26.16 | 29.16 | 31.00 | 35.00 | 40.00 | 45.00 | 53.80 |
| s Max (mm) | 5.50 | 7.00 | 8.00 | 10.00 | 13.00 | 17.00 | 19.00 | 22.00 | 24.00 | 27.00 | 30.00 | 32.00 | 36.00 | 41.00 | 46.00 | 55.00 |
| e Min (mm) | 6.01 | 7.66 | 8.79 | 11.05 | 14.38 | 18.90 | 21.10 | 24.49 | 26.75 | 29.56 | 32.95 | 35.03 | 39.55 | 45.20 | 50.85 | 60.79 |
| m Min (mm) | 8.70 | 11.50 | 14.50 | 17.50 | 23.50 | 29.30 | 35.30 | 41.00 | 47.00 | 53.00 | 59.00 | 64.70 | 70.50 | 79.50 | 88.50 | 106.40 |
| m Max (mm) | 9.00 | 12.00 | 15.00 | 18.00 | 24.00 | 30.00 | 36.00 | 42.00 | 48.00 | 54.00 | 60.00 | 66.00 | 72.00 | 81.00 | 90.00 | 108.00 |
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