Standard: GB 865 - 1986
Available sizes: (Φ14) to Φ20 (5 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|
| (Φ14) | 18.3 | 0.5 | 0.8 | 17.7 | 29 | 27 | 9 |
| Φ12 | 14.3 | 0.5 | 0.6 | 13.7 | 22.5 | 20.6 | 7 |
| Φ16 | 22.35 | 0.8 | 0.8 | 21.65 | 37.4 | 34.6 | 12 |
| Φ18 | 27.35 | 0.8 | 0.8 |
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.
| 26.65 |
| 44.4 |
| 41.6 |
| 14 |
| Φ20 | 36.4 | 0.8 | 0.8 | 35.6 | 59.8 | 56.2 | 19 |
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