Standard: GB 895.2 - 1986
Available sizes: 10 to 8 (7 sizes)
| Size | P | k_max | s_max | s_min | k_nominal |
|---|---|---|---|---|---|
| 10 | 19.5 | 1.58 | 18.98 | 2.0 | 3 |
| 12 | 22.5 | 1.81 | 21.98 | 2.0 | 3 |
| 4 | 4 | 0.03 | 3.82 | 0.6 | 1 |
| 5 | 6 | 0.08 | 5.78 | 0.8 | 2 |
| 6 | 9 | 0.11 |
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.
| 8.78 |
| 0.8 |
| 2 |
| 7 | 12.5 | 0.24 | 12.03 | 1.0 | 3 |
| 8 | 16.0 | 0.82 | 15.53 | 1.6 | 3 |
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