Description and Translation of GB/T 95 Fasteners
GB/T 95 fasteners, a fundamental Chinese standard for mechanical components, function as plain washers widely used in machinery, electrical equipment, and structural assemblies. Their primary role is to distribute clamping force evenly between bolt heads/nuts and connected surfaces, preventing surface damage, reducing pressure concentration, and ensuring stable fastening in various static and dynamic applications. These washers also compensate for surface irregularities and provide electrical insulation in specific scenarios.
In terms of materials, GB/T 95 fasteners are predominantly manufactured from carbon steel (e.g., Q235 and 10# steel conforming to relevant standards) and low-alloy steel, offering appropriate mechanical strength and ductility. For corrosion-resistant requirements, galvanized carbon steel variants are specified, while stainless steel options (e.g., 304) are available for enhanced rust resistance in humid or chemical environments.
Surface treatments include zinc plating with passivation to improve corrosion resistance, phosphating for better lubrication during assembly, and black oxide coating for increased wear resistance. These treatments effectively extend service life and optimize compatibility with diverse operating conditions.
Key characteristics of GB/T 95 fasteners include standardized outer diameters and thicknesses, flat annular profiles with rounded edges, and precise dimensional tolerances ensuring interchangeability. Their mechanical attributes feature specified hardness values, sufficient elasticity to maintain clamping force, and uniform thickness. Additionally, they exhibit reliable load distribution performance and good compatibility with various bolts/nuts, making them indispensable in general industrial fastening applications and mechanical manufacturing.
| Size | Φ1.6 | Φ2 | Φ2.5 | Φ3 | (Φ3.5) | Φ4 | Φ5 | Φ6 | Φ8 | Φ10 | Φ12 | (Φ14) | Φ16 | (Φ18) | Φ20 | ||
| d | min=nominal size | 1.8 | 2.4 | 2.9 | 3.4 | 3.9 | 4.5 | 5.5 | 6.6 | 9 | 11 | 13.5 | 15.5 | 17.5 | 20 | 22 | |
| max | 2.05 | 2.65 | 3.15 | 3.7 | 4.2 | 4.8 | 5.8 | 6.96 | 9.36 | 11.43 | 13.93 | 15.93 | 17.93 | 20.43 | 22.52 | ||
| dc | max=nominal size | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 12 | 16 | 20 | 24 | 28 | 30 | 34 | 37 | |
| min | 3.25 | 4.25 | 5.25 | 6.1 | 7.1 | 8.1 | 9.1 | 10.9 | 14.9 | 18.7 | 22.7 | 26.7 | 28.7 | 32.4 | 35.4 | ||
| h | Nominal Size | 0.3 | 0.3 | 0.5 | 0.5 | 0.5 | 0.8 | 1 | 1.6 | 1.6 | 2 | 2.5 | 2.5 | 3 | 3 | 3 | |
| max | 0.4 | 0.4 | 0.6 | 0.6 | 0.6 | 1 | 1.2 | 1.9 | 1.9 | 2.3 | 2.8 | 2.8 | 3.6 | 3.6 | 3.6 | ||
| min | 0.2 | 0.2 | 0.4 | 0.4 | 0.4 | 0.6 | 0.8 | 1.3 | 1.3 | 1.7 | 2.2 | 2.2 | 2.4 | 2.4 | 2.4 | ||
| per 1000 units ≈ kg | 0.024 | 0.036 | 0.085 | 0.115 | 0.15 | 0.3 | 0.43 | 0.991 | 1.73 | 3.44 | 6.07 | 8.38 | 10.98 | 13.98 | 16.37 | ||
Description and Translation of GB/T 95 Fasteners
GB/T 95 fasteners, a fundamental Chinese standard for mechanical components, function as plain washers widely used in machinery, electrical equipment, and structural assemblies. Their primary role is to distribute clamping force evenly between bolt heads/nuts and connected surfaces, preventing surface damage, reducing pressure concentration, and ensuring stable fastening in various static and dynamic applications. These washers also compensate for surface irregularities and provide electrical insulation in specific scenarios.
In terms of materials, GB/T 95 fasteners are predominantly manufactured from carbon steel (e.g., Q235 and 10# steel conforming to relevant standards) and low-alloy steel, offering appropriate mechanical strength and ductility. For corrosion-resistant requirements, galvanized carbon steel variants are specified, while stainless steel options (e.g., 304) are available for enhanced rust resistance in humid or chemical environments.
Surface treatments include zinc plating with passivation to improve corrosion resistance, phosphating for better lubrication during assembly, and black oxide coating for increased wear resistance. These treatments effectively extend service life and optimize compatibility with diverse operating conditions.
Key characteristics of GB/T 95 fasteners include standardized outer diameters and thicknesses, flat annular profiles with rounded edges, and precise dimensional tolerances ensuring interchangeability. Their mechanical attributes feature specified hardness values, sufficient elasticity to maintain clamping force, and uniform thickness. Additionally, they exhibit reliable load distribution performance and good compatibility with various bolts/nuts, making them indispensable in general industrial fastening applications and mechanical manufacturing.
| Size | Φ1.6 | Φ2 | Φ2.5 | Φ3 | (Φ3.5) | Φ4 | Φ5 | Φ6 | Φ8 | Φ10 | Φ12 | (Φ14) | Φ16 | (Φ18) | Φ20 | ||
| d | min=nominal size | 1.8 | 2.4 | 2.9 | 3.4 | 3.9 | 4.5 | 5.5 | 6.6 | 9 | 11 | 13.5 | 15.5 | 17.5 | 20 | 22 | |
| max | 2.05 | 2.65 | 3.15 | 3.7 | 4.2 | 4.8 | 5.8 | 6.96 | 9.36 | 11.43 | 13.93 | 15.93 | 17.93 | 20.43 | 22.52 | ||
| dc | max=nominal size | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 12 | 16 | 20 | 24 | 28 | 30 | 34 | 37 | |
| min | 3.25 | 4.25 | 5.25 | 6.1 | 7.1 | 8.1 | 9.1 | 10.9 | 14.9 | 18.7 | 22.7 | 26.7 | 28.7 | 32.4 | 35.4 | ||
| h | Nominal Size | 0.3 | 0.3 | 0.5 | 0.5 | 0.5 | 0.8 | 1 | 1.6 | 1.6 | 2 | 2.5 | 2.5 | 3 | 3 | 3 | |
| max | 0.4 | 0.4 | 0.6 | 0.6 | 0.6 | 1 | 1.2 | 1.9 | 1.9 | 2.3 | 2.8 | 2.8 | 3.6 | 3.6 | 3.6 | ||
| min | 0.2 | 0.2 | 0.4 | 0.4 | 0.4 | 0.6 | 0.8 | 1.3 | 1.3 | 1.7 | 2.2 | 2.2 | 2.4 | 2.4 | 2.4 | ||
| per 1000 units ≈ kg | 0.024 | 0.036 | 0.085 | 0.115 | 0.15 | 0.3 | 0.43 | 0.991 | 1.73 | 3.44 | 6.07 | 8.38 | 10.98 | 13.98 | 16.37 | ||
