Standard: GB /T 3632
Available sizes: (22) to 20 (3 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| (22) | 31 | 75.42 | 5 | 4.5 | 31.62 | 54.1 | 35.84 | 36.64 | 56 | 5.8 |
| 16 | 21 | 33.55 | 4 | 3.5 | 21.52 | 38.4 | 24.32 | 25.12 | 40 |
| 4.8 |
| 20 | 25 | 55.76 | 5 | 4.5 | 25.52 | 45.4 | 28.32 | 29.12 | 47 | 5.8 |
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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