Standard: GB /T 10603
Available sizes: 1 to 7 (7 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|
| 1 | / | 12 | 26.4 | 0.63 | 0.8 | 25 | 12 | 10 | 9 |
| 2 | 0.63 | 14 | 30.8 | 1 | 1.25 | 31.5 | 14 | 12.5 | 11.2 |
| 3 | 1 |
| 18 |
| 39.6 |
| 1.6 |
| 2 |
| 40 |
| 18 |
| 16 |
| 14 |
| 4 | 1.6 | 22 | 48.4 | 2.5 | 3.2 | 50 | 22 | 20 | 17.75 |
| 5 | 2.5 | 27 | 59.4 | 4 | 5 | 63 | 27 | 25 | 22.5 |
| 6 | 4 | 36 | 79.2 | 6.3 | 8 | 80 | 36 | 31.5 | 28 |
| 7 | 5 | 39 | 85.8 | 8 | 10 | 90 | 39 | 35.5 | 31.5 |
Standard corrosion protection for indoor and mild outdoor environments.
Salt spray: 96–200 hours | RoHS compliant (trivalent chromium)
High-performance coating for automotive, marine, and harsh environments.
Salt spray: 720–1500 hours | Recommended for grade 8.8+
Heavy-duty protection for structural and outdoor applications.
Salt spray: 500–1000 hours | Thread tolerance adjustment required
Note for high-strength fasteners (Grade 10.9, 12.9): Electroplating processes require hydrogen embrittlement relief baking (minimum 4 hours at 200°C within 4 hours of plating). Contact our engineering team for grade-specific plating recommendations.
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.
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