Standard: GB /T 3746 - 2008
Available sizes: M10 to M8 (5 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| M10 | 25 | L | 21 | 7 | 8 | 1.5 | 12 | 14 | 6 | 14 |
| M12 | 25 | L | 28 | 9 | 15 | 1.5 | 19 | — | 12 | 21 |
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.
| M14 |
| 16 |
| L |
| 31 |
| 9 |
| 18 |
| 1.5 |
| 24 |
| — |
| 15 |
| 23.5 |
| M16 | 16 | L | 35 | 10 | 22 | 2 | 27 | — | 19 | 27.5 |
| M8 | 10 | LL | 15 | 6 | 5 | 1 | 9 | 11 | 3.5 | 9.5 |
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