Standard: DIN 934 - 1982
Available sizes: M1 to M2.5 (8 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| M1 | 0.25 | 0.054 | 0.75 | 3 | / | / | 3.28 | / | 1 | 2.9 |
| M1.2 | 0.35 | 0.076 | 1.05 | 3.2 | / | / | 3.48 | / | 1.3 |
| 3.08 |
| M1.4 | 0.4 | 0.142 | 1.35 | 4 | / | / | 4.38 | / | 1.6 | 3.88 |
| M1.6 | 0.45 | 0.28 | 1.75 | 5 | / | / | 5.45 | / | 2 | 4.82 |
| M1.7 | 0.5 | 0.384 | 2.15 | 5.5 | / | / | 6.01 | / | 2.4 | 5.32 |
| M2 | 0.7 | 0.81 | 2.9 | 7 | / | / | 7.66 | / | 3.2 | 6.78 |
| M2.3 | 1 | 2.5 | 4.7 | 10 | / | / | 11.05 | / | 5 | 9.78 |
| M2.5 | 1.25 | 5.2 | 6.14 | 13 | 1 | / | 14.38 | / | 6.5 | 12.73 |
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.