Standard: GB /T 5649 - 2008
Available sizes: M10 to M20 (6 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|
| M10 | 1.5 | 9.7 | 0.9 | 17.5 | 17.9 | 0.82 | 17.1 | 0.98 |
| M12 | 1.5 | 13.7 | 0.9 | 22.5 | 22.9 | 0.82 | 22.1 | 0.98 |
| M14 | 1.5 | 17.7 | 1.25 | 27.5 | 27.9 | 1.17 | 27.1 | 1.33 |
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.
| M16 | 2 | 24 | 1.25 | 32.5 | 32.9 | 1.17 | 32.1 | 1.33 |
| M18 | 2 | 39 | 1.25 | 50.5 | 50.9 | 1.17 | 50.1 | 1.33 |
| M20 | 2 | 45 | 1.25 | 55.5 | 55.9 | 1.17 | 55.1 | 1.33 |
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