Product Specifications
| Model / Specification | Φ3-Φ36 |
| Material | Carbon steel, Stainless steel |
| Thread size d | Φ3 | (Φ3.5) | Φ4 | Φ5 | Φ6 | Φ8 | Φ10 | Φ12 | (Φ14) |
|---|
| d | Min.=nominal | 3.2 | 3.7 | 4.3 | 5.3 | 6.4 | 8.4 | 10.5 | 13 | 15 |
| Max. | 3.38 | 3.88 | 4.48 | 5.48 | 6.62 | 8.62 | 10.77 | 13.27 | 15.27 |
| dc | Max.=nominal | 9 | 11 | 12 | 15 | 18 | 24 | 30 | 37 | 44 |
| Min. | 8.64 | 10.57 | 11.57 | 14.57 | 17.57 | 23.48 | 29.48 | 36.38 | 43.38 |
| h | Nominal | 0.8 | 0.8 | 1 | 1 | 1.6 | 2 | 2.5 | 3 | 3 |
| Max. | 0.9 | 0.9 | 1.1 | 1.1 | 1.8 | 2.2 | 2.7 | 3.3 | 3.3 |
| Min. | 0.7 | 0.7 | 0.9 | 0.9 | 1.4 | 1.8 | 2.3 | 2.7 | 2.7 |
| Wt kg/1000 pcs | 0.349 | 0.529 | 0.774 | 1.21 | 2.79 | 6.23 | 12.17 | 22.19 | 31.64 |
| Thread size d | Φ16 | (Φ18) | Φ20 | (Φ22) | Φ24 | (Φ27) | Φ30 | (Φ33) | Φ36 |
|---|
| d | Min.=nominal | 17 | 19 | 21 | 23 | 25 | 30 | 33 | 36 | 39 |
| Max. | 17.27 | 19.33 | 21.33 | 23.52 | 25.52 | 30.52 | 33.62 | 36.62 | 39.62 |
| dc | Max.=nominal | 50 | 56 | 60 | 66 | 72 | 85 | 92 | 105 | 110 |
| Min. | 49.38 | 55.26 | 59.26 | 64.8 | 70.8 | 83.6 | 90.6 | 103.6 | 108.6 |
| h | Nominal | 3 | 4 | 4 | 5 | 5 | 6 | 6 | 6 | 8 |
| Max. | 3.3 | 4.3 | 4.3 | 5.6 | 5.6 | 6.6 | 6.6 | 6.6 | 9 |
| Min. | 2.7 | 3.7 | 3.7 | 4.4 | 4.4 | 5.4 | 5.4 | 5.4 | 7 |
| Wt kg/1000 pcs | 40.89 | 68.43 | 77.9 | 118 | 140.5 | 234 | 272.8 | 359.9 | 521.8 |
Dimensions in mm. The bracketed sizes ((4.5), (5.5), (7)) are non-preferred. Data compiled from GB/T 96.1-2002 for selection reference only; actual supply is subject to drawings and inspection reports.
Product Overview
The large washer (grade A) is manufactured to GB/T 96.1-2002. It is a flat ring-shaped washer with a hole in the centre, placed between the bolt or nut and the joined part. It increases the contact area, distributes the compressive stress and protects the surface of the joined part. Grade A is a precision grade with high dimensional accuracy and good surface quality, widely used in machinery, construction, automotive and various fastening applications.
1. Product Features
- Flat ring shape with a centre hole, easy to install.
- Grade A precision, high dimensional accuracy and smooth surface.
- Increases the contact area and distributes the compressive stress of the bolt or nut.
- Protects the joined surface from crushing and scratching.
- Available in carbon steel and stainless steel to suit the service environment.
2. Product Advantages
- Distributes compressive stress and prevents the bolt or nut from crushing the joined surface.
- Grade A precision gives a close fit with the bolt or nut and reliable assembly.
- High degree of standardisation: the GB/T 96.1 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
- Fastening in machinery, steel structures and building components.
- Assembly in automotive, motorcycle and construction machinery.
- Fixing of electrical equipment, instruments and meters.
- Stainless steel versions suit damp or mildly corrosive environments such as outdoor, chemical and food equipment.
