Standard: GB /T 1972
Available sizes: 10 to 8 (8 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | ds_nominal |
|---|---|---|---|---|---|---|---|
| 10 | 14 | 0.4 | 0.9 | 7.2 | 0.5 | 0.444 | 279 |
| 12.5 | 18 | 0.5 | 1.2 | 9.2 | 0.7 | 1.03 | 572 |
| 14 | 22.5 | 0.65 | 1.45 | 11.2 | 0.8 | 1.88 | 710 |
| 16 | 28 | 0.8 | 1.8 |
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.
| 14.2 |
| 1 |
| 3.59 |
| 1110 |
| 18 | 35.5 | 1 | 2.25 | 18.3 | 1.25 | 7.13 | 1700 |
| 20 | 45 | 1.3 | 3.05 | 22.4 | 1.75 | 16.4 | 3660 |
| 22.5 | 50 | 1.4 | 3.4 | 25.4 | 2 | 22.9 | 4760 |
| 8 | 10 | 0.3 | 0.7 | 5.2 | 0.4 | 0.18 | 213 |
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