Standard: GB /T 32076.11
Available sizes: M12 to M22 (4 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal |
|---|---|---|---|---|---|---|
| M12 | 16.1 | 3.7 | 4.3 | 16.35 | 29.48 | 30 |
| M16 | 22.3 | 3.7 | 4.3 | 22.6 | 38.38 | 39 |
| M20 | 27.2 | 4.4 | 5.6 | 27.55 | 49 | 50 |
| M22 | 36.2 | 5.4 | 6.6 |
| 36.55 |
| 64.8 |
| 66 |
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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