Standard: GB 876 - 1986
Available sizes: (Φ1.6) to Φ3 (5 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|
| (Φ1.6) | 2.63 | 0.6 | 0.4 | 2.37 | 4 | 0.25 | 0.25 | 3.7 | 1.7 |
| Φ1.4 | 1.73 | 0.5 | 0.3 | 1.47 | 2.8 | 0.22 | 0.2 | 2.55 | 0.9 |
| Φ2 | 3.65 | 0.7 | 0.5 | 3.35 | 5.5 |
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.
| 0.3 |
| 0.3 |
| 5.2 |
| 2.5 |
| Φ2.5 | 5.15 | 1.12 | 0.88 | 4.85 | 8 | 0.35 | 0.5 | 7.64 | 4 |
| Φ3 | 6.15 | 1.12 | 0.88 | 5.85 | 10 | 0.35 | 0.7 | 9.64 | 5 |
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