Standard: JIS B 1101
Available sizes: (M1.4) to M2.5 (6 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (M1.4) | 0.45 | 0.9 | 1.1 | 2.05 | 1.75 | 4.5 | 4.1 | 0.8 | 1 | 1.9 | 0.95 |
| M1 | 0.25 | 0.4 | 0.6 | 1.05 | 0.75 | 2.3 | 2 |
| 0.32 |
| 0.5 |
| 0.9 |
| 0.42 |
| M1.2 | 0.35 | 0.55 | 0.75 | 1.3 | 1 | 3 | 2.6 | 0.4 | 0.65 | 1.15 | 0.55 |
| M1.6 | 0.6 | 1.2 | 1.6 | 2.75 | 2.35 | 6 | 5.5 | 1 | 1.4 | 2.55 | 1.15 |
| M2 | 0.8 | 1.6 | 2.2 | 3.9 | 3.3 | 9 | 8.4 | 1.2 | 1.9 | 3.6 | 1.4 |
| M2.5 | 1.25 | 2.5 | 3.5 | 6 | 5.4 | 14 | 13.2 | 1.6 | 3 | 5.7 | 1.8 |
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.
© 2026 Ningbo Ruixi Metal Surface Technology Co., Ltd.. All rights reserved.