Standard: GB /T 32076.3 - 2015
Available sizes: (M14) to M20 (5 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (M14) | 2.5 | 11.5 | 32.95 | 0.4 | 21.7 | 42 | 48 | 17.3 | 27.7 | 0.8 | 18.7 |
| (M18) | 3 | 17 | 50.85 | 0.4 | 32.4 | 60 | 66 |
| 26.16 |
| 42.8 |
| 0.8 |
| 27.84 |
| M12 | 2 | 8.8 | 26.17 | 0.4 | 17.2 | 34 | 40 | 13.3 | 22.0 | 0.8 | 14.7 |
| M16 | 2.5 | 14 | 39.55 | 0.4 | 26.4 | 50 | 56 | 21.16 | 33.3 | 0.8 | 22.84 |
| M20 | 4 | 22.5 | 66.44 | 0.4 | 42.4 | 78 | 84 | 35 | 55.9 | 0.8 | 37 |
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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