Standard: GB 1235 - 1976
Available sizes: 10 to 9 (8 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal |
|---|---|---|---|---|---|---|
| 10 | 2.4 | 10.73 | 10.47 | 2.49 | 2.31 | 10.6 |
| 11 | 2.4 | 13.73 | 13.47 | 2.49 | 2.31 | 13.6 |
| 12 | 2.4 | 14.73 | 14.47 | 2.49 | 2.31 | 14.6 |
| 5 | 1.9 | 2.82 | 2.58 |
| 1.98 |
| 1.82 |
| 2.7 |
| 6 | 1.9 | 4.82 | 4.58 | 1.98 | 1.82 | 4.7 |
| 7 | 1.9 | 6.82 | 6.58 | 1.98 | 1.82 | 6.7 |
| 8 | 1.9 | 8.82 | 8.58 | 1.98 | 1.82 | 8.7 |
| 9 | 1.9 | 10.82 | 10.58 | 1.98 | 1.82 | 10.7 |
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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