Standard: GB /T 894.1 - 1986
Available sizes: 10 to 9 (8 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| 10 | 16.5 | 16.89 | 17 | 1.05 | 0.87 | 16.6 | 16.14 | 1.7 | 1 | 2.48 |
| 3 | 3.7 | 3.752 | 3.8 | 0.43 | 0.34 | 3.74 | 3.55 | 1 | 0.4 | 0.88 |
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.
| 4 |
| 5.6 |
| 5.652 |
| 5.7 |
| 0.64 |
| 0.53 |
| 5.64 |
| 5.45 |
| 1.2 |
| 0.6 |
| 1.32 |
| 5 | 7.4 | 7.542 | 7.6 | 0.84 | 0.7 | 7.46 | 7.22 | 1.2 | 0.8 | 1.32 |
| 6 | 9.3 | 9.542 | 9.6 | 1.05 | 0.87 | 9.4 | 8.94 | 1.5 | 1 | 1.44 |
| 7 | 11 | 11.39 | 11.5 | 1.05 | 0.87 | 11.1 | 10.64 | 1.5 | 1 | 1.72 |
| 8 | 12.9 | 13.29 | 13.4 | 1.05 | 0.87 | 13 | 12.54 | 1.7 | 1 | 1.88 |
| 9 | 14.7 | 15.09 | 15.2 | 1.05 | 0.87 | 14.8 | 14.34 | 1.7 | 1 | 2.32 |
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