Standard: GB /T 19674.2 - 2005
Available sizes: M10 to M20 (6 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M10 | G 1/4 | 9.7 | 13.7 | 4.18 | 12 | 6 | 6.18 | 17 | 12.5 | 4 | 4 |
| M12 | G 3/8 | 13.7 | 17.2 | 7.22 | 12 | 9 | 9.22 |
| 22 |
| 16.5 |
| 7 |
| 4 |
| M14 | G 1/2 | 17.7 | 21.5 | 10.27 | 14 | / | / | 27 | 20.5 | 10 | 4 |
| M16 | G 3/4 | 23.7 | 27 | / | 16 | 18 | 18.27 | 32 | 26.5 | / | 5 |
| M18 | G 1 | 30 | 33.8 | 20.33 | 18 | 23 | 23.33 | 40 | 33.5 | 20 | 5 |
| M20 | G 1-1/2 | 44 | 48.5 | 35.39 | 22 | 36 | 36.39 | 55 | 48.5 | 35 | 5 |
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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