Standard: GB /T 3632
Available sizes: (M22) to M20 (3 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (M22) | 3.5 | 25 | 18 | 46.5 | 55 | 35.84 | 30.84 | 20.05 | 17.95 | 29.16 | 19 |
| M16 | 2.5 | 19 | 14 | 34.5 | 37 | 24.4 | 20.52 |
| 13.9 |
| 12.1 |
| 19.48 |
| 13 |
| M20 | 3 | 23 | 16 | 41.5 | 44 | 28.4 | 24.52 | 15.9 | 14.1 | 23.48 | 15 |
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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