Product Specifications
| Model / Specification | M8-M36 |
| Material | Carbon steel, Stainless steel |
| Thread size d | M8 | M10 | M12 | M16 | M20 | M24 | M30 | M36 |
|---|
| P | Pitch | 1 | 1 | 1.5 | 1.5 | 1.5 | 2 | 2 | 3 |
| c | Max. | 0.60 | 0.60 | 0.60 | 0.80 | 0.80 | 0.80 | 0.80 | 0.80 |
| Min. | 0.15 | 0.15 | 0.15 | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 |
| da | Max. | 8.75 | 10.80 | 13.00 | 17.30 | 21.60 | 25.90 | 32.40 | 38.90 |
| Min. | 8.00 | 10.00 | 12.00 | 16.00 | 20.00 | 24.00 | 30.00 | 36.00 |
| dw | Min. | 11.63 | 14.63 | 16.63 | 22.49 | 27.70 | 33.25 | 42.75 | 51.11 |
| e | Min. | 14.38 | 17.77 | 20.03 | 26.75 | 32.95 | 39.55 | 50.85 | 60.79 |
| m | Max. | 7.5 | 9.3 | 12 | 16.4 | 20.3 | 23.9 | 28.6 | 34.7 |
| Min. | 7.14 | 8.94 | 11.57 | 15.7 | 19 | 22.6 | 27.3 | 33.1 |
| mw | Min. | 5.71 | 7.15 | 9.26 | 12.56 | 15.20 | 18.08 | 21.84 | 26.48 |
| s | Max.=nominal | 13 | 16 | 18 | 24 | 30 | 36 | 46 | 55 |
| Min. | 12.73 | 15.73 | 17.73 | 23.67 | 29.16 | 35 | 45 | 53.8 |
| Weight ≈ kg / 1000 pcs (steel) | 5.15 | 9.58 | 15 | 35.43 | 62.77 | 108.4 | 221.3 | 387.1 |
| Thread size d | (M10) | (M12) | (M14) | (M18) | (M20) | (M22) | (M27) | (M33) |
|---|
| P | Pitch | 1.25 | 1.25 | 1.5 | 1.5 | 2 | 1.5 | 2 | 2 |
| c | Max. | 0.60 | 0.60 | 0.60 | 0.80 | 0.80 | 0.80 | 0.80 | 0.80 |
| Min. | 0.15 | 0.15 | 0.15 | 0.20 | 0.20 | 0.20 | 0.20 | 0.20 |
| da | Max. | 10.80 | 13.00 | 15.10 | 19.50 | 21.60 | 23.70 | 29.10 | 35.60 |
| Min. | 10.00 | 12.00 | 14.00 | 18.00 | 20.00 | 22.00 | 27.00 | 33.00 |
| dw | Min. | 14.63 | 16.63 | 19.64 | 24.85 | 27.70 | 31.35 | 38.00 | 46.55 |
| e | Min. | 17.77 | 20.03 | 23.36 | 29.56 | 32.95 | 37.29 | 45.2 | 55.37 |
| m | Max. | 9.3 | 12 | 14.1 | 17.6 | 20.3 | 21.8 | 26.7 | 32.5 |
| Min. | 8.94 | 11.57 | 13.4 | 16.9 | 19 | 20.5 | 25.4 | 30.9 |
| mw | Min. | 7.15 | 9.26 | 10.72 | 13.52 | 15.20 | 16.40 | 20.32 | 24.72 |
| s | Max.=nominal | 16 | 18 | 21 | 27 | 30 | 34 | 41 | 50 |
| Min. | 15.73 | 17.73 | 20.67 | 26.16 | 29.16 | 33 | 40 | 49 |
| Weight ≈ kg / 1000 pcs (steel) | 9.74 | 14.74 | 23.27 | 45.09 | 64.21 | 89.47 | 161.2 | 291.6 |
Dimensions in mm. The bracketed sizes ((4.5), (5.5), (7)) are non-preferred. Data compiled from GB/T 6176-2016 for selection reference only; actual supply is subject to drawings and inspection reports.
Product Overview
The style 2 hexagon nut with fine pitch thread is manufactured to GB/T 6176-2016. The nut is hexagonal and tightened with a wrench or socket, and is used together with fine pitch bolts or studs. Compared with style 1, the style 2 nut is taller (about 1D), giving more engaged threads and higher load capacity, which suits high preload and high strength applications. The fine pitch thread self-locks well and resists loosening under vibration, and is widely used in automotive, machinery, hydraulic and precision equipment.
1. Product Features
- Style 2 hexagon nut, about 1D high: more engaged threads and higher load capacity.
- Fine pitch thread (smaller pitch than coarse): better self-locking and vibration resistance.
- Larger minor diameter for the same nominal size, giving higher load capacity.
- Width across flats controlled to the standard to match standard wrenches and sockets.
- Available in carbon steel and stainless steel to suit the service environment and strength requirement.
2. Product Advantages
- Taller than the style 1 nut, with fuller thread engagement for high preload and high load.
- Better vibration resistance than coarse pitch nuts, suitable for automotive and construction machinery.
- High degree of standardisation: the GB/T 6176 dimensional system is complete, which simplifies export matching and second sourcing.
- Material and surface finish can be customised to balance strength, corrosion resistance and cost.
3. Application Scope
- High strength fastening in automotive, motorcycle and construction machinery.
- Threaded connections in hydraulic and pneumatic systems and precision machinery.
- Mechanical structures that need high preload and high load capacity.
- Stainless steel versions suit damp or mildly corrosive environments such as chemical, food and medical equipment.
