Standard: GB /T 9125 - 2003
Available sizes: M10 to M20 (5 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M10 | 1.75 | 19.85 | 20.03 | 36 | 49 | 1.5 | 1.25 | 11.73 | 11.57 | 30 | 12 |
| M12 | 2 | 26.17 | 26.75 | 44 | 57 | 1.5 | — | 15.73 |
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.
| 15.57 |
| 38 |
| 16 |
| M14 | 3 | 39.55 | 39.98 | 60 | 73 | 2 | — | 23.67 | 23.48 | 54 | 24 |
| M16 | 3.5 | 50.85 | — | 72 | 85 | 2 | — | — | 29.48 | 66 | 30 |
| M20 | 3.5 | 55.37 | — | 78 | 91 | 2 | — | — | 32.38 | — | 33 |
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