Standard: GB 874 - 1986
Available sizes: (Φ1.2) to Φ3 (6 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (Φ1.2) | 1.46 | 0.1 | 1.16 | 0.77 | 0.65 | 1.34 | 3.45 | 0.65 | 1.64 | 3.15 | 0.77 |
| (Φ1.6) | 3.06 | 0.1 | 2.76 | 2.12 | 1.94 | 2.94 | 6.28 |
| 1.94 |
| 3.24 |
| 5.92 |
| 2.12 |
| Φ1.4 | 2.06 | 0.1 | 1.76 | 1.12 | 0.94 | 1.94 | 4.75 | 0.94 | 2.24 | 4.45 | 1.12 |
| Φ2 | 4.08 | 0.3 | 3.71 | 2.62 | 2.44 | 3.92 | 7.98 | 2.34 | 4.29 | 7.62 | 2.52 |
| Φ2.5 | 6.08 | 0.3 | 5.71 | 4.66 | 4.42 | 5.92 | 11.72 | 3.92 | 6.29 | 11.28 | 4.16 |
| Φ3 | 8.1 | 0.3 | 7.65 | 6.16 | 5.92 | 7.9 | 15.82 | 4.42 | 8.35 | 15.38 | 4.66 |
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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