Standard: GB /T 932 - 1988
Available sizes: M3 to M5 (3 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M3 | 6.3 | 7.8 | 8.2 | 11.32 | 11 | 6.5 | 11.5 | 10.82 | 8 | 11.68 | 11.18 |
| M4 | 8.4 | 8.8 | 9.2 | 13.32 | 13 | 8.6 | 13.5 |
| 12.82 |
| 9 |
| 13.68 |
| 13.18 |
| M5 | 13 | 12.8 | 13.2 | 15.78 | 15 | 13.24 | 16 | 14.78 | 13 | 16.22 | 15.22 |
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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