Standard: GB 872 - 1986
Available sizes: (Φ1.2) to Φ3 (6 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|
| (Φ1.2) | 1.46 | 0.58 | 0.42 | 1.34 | 2.7 | 2.3 | 0.1 |
| (Φ1.6) | 3.06 | 0.88 | 0.72 | 2.94 | 5.74 | 5.26 | 0.1 |
| Φ1.4 | 2.06 | 0.68 | 0.52 | 1.94 | 3.74 | 3.26 | 0.1 |
| Φ2 | 4.08 | 1.13 | 0.87 |
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.
| 3.92 |
| 7.79 |
| 7.21 |
| 0.3 |
| Φ2.5 | 6.08 | 1.33 | 1.07 | 5.92 | 11.85 | 11.15 | 0.3 |
| Φ3 | 10.1 | 1.63 | 1.37 | 9.9 | 19.42 | 18.58 | 0.3 |
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