GB /T 9074.1 (GB) and ISO 10644 (ISO) are equivalent fastener standards that specify the same or very similar products. Both standards cover 8 fastener types in our database.
GB /T 9074.1 (GB standard) and ISO 10644 (ISO standard) are equivalent standards that define the same fastener geometry and mechanical requirements. Minor differences may exist in tolerances, marking requirements, or referenced test methods, but the products are interchangeable in most applications. Always verify specific project requirements with your engineer.
| Property | GB /T 9074.1 | ISO 10644 |
|---|---|---|
| Standard Body | GB | ISO |
| Product Types | 8 fastener types | |
| Interchangeable? | Yes — equivalent standard | |
From: Hexagon Head Bolts and Plain Washers Assemblies — applies to both GB /T 9074.1 and ISO 10644
| Size | P | k_max | k_min | s_max | s_min | ds_max | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|
| (M3.5) | 2 | 1.6 | 11 | 8 | 1.6 | 18 | 1.6 | 12 |
| M2.5 | 1 | 0.8 | 6 | 4 | 0.6 | 9 | 0.6 | 7 |
| M3 | 1.4 |
Both GB /T 9074.1 and ISO 10644 fasteners are available with various surface treatments. Common options for these standards include:
Request detailed technical specifications, material certifications, and availability information for your application requirements. Our engineering team can provide product recommendations, custom specifications, and technical documentation.
| ✓ |
| Screw and Washer Sssemblies Made of Steel with Plain Washers - Washer Hardness Classes 200 HV and 300 HV | ✓ |
| Cross pan head screw and washer assemblies,coarse threaded screws with captive plain washer | ✓ |
| 1 |
| 8 |
| 6 |
| 0.8 |
| 12 |
| 0.8 |
| 9 |
| M4 | 3 | 2.5 | 18 | 12 | 2.5 | 30 | 2.5 | 20 |
| M5 | 3.5 | 3 | 20 | 14 | 3 | 37 | 3 | 24 |
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