Standard: JIS B 1183 - 2001
Available sizes: (M14) to M8 (5 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (M14) | 2.5 | 18 | 22 | 37.6 | 18 | 1.5 | 38 | 30 | 29.65 | 38.4 | 17.57 |
| M10 | 2 | 11 | 14 | 23.7 | 11 | 1.5 | 24 | 19 |
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.
| 18.65 |
| 24.3 |
| 10.57 |
| M12 | 2.5 | 15 | 18 | 30.6 | 15 | 1.5 | 31 | 24 | 23.65 | 31.4 | 14.57 |
| M16 | 3 | 19 | 24 | 40.6 | 19 | 2 | 41 | 32 | 31.6 | 41.4 | 18.48 |
| M8 | 1.5 | 8 | 10 | 17.7 | 8 | 1.25 | 18 | 14 | 13.75 | 18.3 | 7.64 |
© 2026 Ningbo Ruixi Metal Surface Technology Co., Ltd.. All rights reserved.