Standard: GB 975 - 1986
Available sizes: (Φ1.2) to Φ1.8 (5 sizes)
| Size | P | k_max | s_max | s_min | k_nominal |
|---|---|---|---|---|---|
| (Φ1.2) | 3.44 | 0.25 | 2.96 | 0.6 | 0.4 |
| Φ0.7 | 2.4 | 0.15 | 2 | 0.38 | 0.22 |
| Φ1 | 2.9 | 0.2 | 2.5 | 0.5 | 0.3 |
| Φ1.5 | 4.74 | 0.5 | 4.26 | 0.92 | 0.68 |
| Φ1.8 | 5.74 | 0.5 | 5.26 | 0.92 | 0.68 |
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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