Standard: GB /T 32076.7 - 2015
Available sizes: (39) to 48 (4 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (39) | 43.4 | 3 | 1.5 | 8 | 9.2 | 44.02 | 76.8 | 3 | 3.5 | 78 | 6.8 |
| (45) | 58 | 4 | 2 | 10 | 11.2 | 58.74 | 103.6 |
| 4 |
| 4.5 |
| 105 |
| 8.8 |
| 42 | 49.4 | 3 | 1.5 | 8 | 9.2 | 50.02 | 90.6 | 3.4 | 4 | 92 | 6.8 |
| 48 | 66 | 4 | 2 | 10 | 11.2 | 66.74 | 113.6 | 4.5 | 5 | 115 | 8.8 |
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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