Standard: GB /T 886
Available sizes: 30 to 50 (5 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal |
|---|---|---|---|---|---|---|
| 30 | 35.16 | 3.7 | 37 | 35 | 42 | 4 |
| 35 | 45.16 | 3.7 | 47 | 45 | 52 | 4 |
| 40 | 55.19 | 4.7 | 58 | 55 | 65 | 5 |
| 45 | 65.19 | 4.7 | 68 | 65 | 75 |
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.
| 5 |
| 50 | 70.19 | 4.7 | 73 | 70 | 80 | 5 |
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