Standard: GB 863.2 - 1986
Available sizes: (Φ14) to Φ20 (6 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|
| (Φ14) | 20.35 | 14.1 | 13 | 19.65 | 32 | 16.5 | 30.4 | 1 |
| (Φ18) | 30.35 | 20.3 | 19 | 29.65 | 48 | 24.5 | 46.4 | 1.6 |
| Φ10 | 12.3 | 8.4 | 7.5 | 11.7 | 19 |
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.
| 9.5 |
| 17.7 |
| 0.6 |
| Φ12 | 16.3 | 10.9 | 10 | 15.7 | 25 | 13 | 23.7 | 0.8 |
| Φ16 | 24.35 | 17.1 | 16 | 23.65 | 40 | 20.5 | 38.4 | 1.2 |
| Φ20 | 36.4 | 24.3 | 23 | 35.6 | 58 | 30 | 56.1 | 2 |
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