Standard: ASME B 18.16
Available sizes: (M10) to M8 (8 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (M10) | 4 | 22.1 | 19 | 60.79 | 38.9 | 55 | 53.8 | 42.6 | 40.6 | 63.51 | 36.9 |
| M10 | 3.5 | 18.2 | 15.7 | 50.85 | 32.6 | 46 | 45 |
| 35.6 |
| 33.6 |
| 53.12 |
| 30.6 |
| M3 | 0.6 | 1.7 | 1.7 | 6.58 | 5 | 6 | 5.82 | 5 | 4.3 | 6.93 | 4.3 |
| M3.5 | 0.8 | 2.7 | 2.7 | 8.79 | 6.8 | 8 | 7.78 | 7.2 | 6.4 | 9.24 | 6 |
| M4 | 1.25 | 4.3 | 3.7 | 14.38 | 9.5 | 13 | 12.73 | 10.2 | 9.2 | 15.01 | 8.5 |
| M5 | 1.5 | 6.2 | 5.6 | 16.64 | 12.5 | 15 | 14.73 | 13.5 | 12.5 | 17.32 | 11.5 |
| M6 | 2 | 8.9 | 7.8 | 23.35 | 17 | 21 | 20.67 | 18.3 | 17.1 | 24.25 | 15.8 |
| M8 | 2.5 | 12.7 | 10.9 | 32.95 | 22.8 | 30 | 29.16 | 25.1 | 23.8 | 34.64 | 21.5 |
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.
© 2026 Ningbo Ruixi Metal Surface Technology Co., Ltd.. All rights reserved.