Standard: GB 8262 - 1987
Available sizes: M12 to M20 (5 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M12 | 24 | 9 | 20.215 | 7 | 6.82 | 23.48 | 10 | 20 | 19.785 | 9.64 | 7.18 |
| M14 | 31 | 11 | 26.26 | 9 | 8.82 | 30.38 | 12 | 26 |
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.
| 25.74 |
| 11.57 |
| 9.18 |
| M16 | 39 | 14 | 31.31 | 11 | 10.785 | 38.38 | 15.5 | 31 | 30.69 | 15.07 | 11.215 |
| M18 | 47 | 18 | 38.31 | 13.5 | 13.285 | 46.38 | 19.5 | 38 | 37.69 | 18.98 | 13.715 |
| M20 | 53 | 20 | 42.31 | 15 | 14.785 | 52.26 | 21.5 | 42 | 41.69 | 20.98 | 15.215 |
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