Standard: CB 908 - 1996
Available sizes: M14 to M24 (4 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|
| M14 | 2 | 12.65 | 27.7 | 24 | 23.72 | 13.35 | 34 |
| M16 | 3 | 18.58 | 41.6 | 36 | 35.66 | 19.42 | 112 |
| M20 | 3.5 | 23.58 | 53.1 | 46 | 45.66 | 24.42 | 234 |
| M24 | 4 | 27.58 | 63.5 |
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.
| 55 |
| 54.6 |
| 28.42 |
| 371 |
© 2026 Ningbo Ruixi Metal Surface Technology Co., Ltd.. All rights reserved.