Standard: GB /T 5974.1 - 2006
Available sizes: 10 to 8 (5 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 10 | 17.8 | 11.2 | 8.8 | 25.2 | 40 | 18.4 | 17.2 | 72 | 79.2 | 28 | 44 |
| 12 | 22.3 | 14 | 11 | 32.2 | 50 | 23 | 21.6 |
| 90 |
| 97.2 |
| 35 |
| 54 |
| 14 | 26.7 | 16.8 | 13.2 | 38.6 | 60 | 27.6 | 25.8 | 108 | 116.6 | 42 | 64.8 |
| 6 | 8.9 | 5.6 | 4.4 | 12.6 | 20 | 9.2 | 8.6 | 36 | 39.6 | 14 | 22 |
| 8 | 13.4 | 8.4 | 6.6 | 19.6 | 30 | 13.8 | 13 | 54 | 57.6 | 21 | 32 |
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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