Standard: GB /T 13807.3
Available sizes: (M27) to M30 (6 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (M27) | 4.5 | 60 | 72 | 33.5 | 10 | 46 | 63.5 | 23 | 92 | 45.5 | 55.8 |
| M12 | 2 | 27.5 | 34.5 | 13 | 6 | 20.5 | 26 |
| 10 |
| 40 |
| 18.5 |
| 20.03 |
| M16 | 3 | 37.5 | 45.5 | 17.5 | 10 | 27.5 | 35 | 14 | 56 | 26.5 | 30.14 |
| M20 | 3.5 | 45 | 55 | 23 | 10 | 35 | 45 | 17 | 68 | 33.5 | 39.98 |
| M24 | 4 | 52.5 | 64.5 | 28 | 10 | 40.5 | 53.5 | 22 | 82 | 39.5 | 45.63 |
| M30 | 4.5 | 62.5 | 74.5 | 36 | 10 | 48.5 | 68.5 | 26 | 98 | 49.5 | 55.8 |
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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