Standard: DIN 188 - 1987
Available sizes: M10 to M8 (7 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| M10 | 2 | 16 | 9.6 | 16 | 16.7 | 38 | 44 | 10.5 | 11.4 | 15.3 |
| M12 | 3 | 24 | 14.1 | 24 | 24.84 | 54 | 60 | 15 | 15.9 | 23.16 |
| M16 | 4 | 36 | 22 |
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.
| 36 |
| 37 |
| 78 |
| 84 |
| 23 |
| 24 |
| 35 |
| M20 | 5 | 48 | 29 | 48 | 49 | — | 108 | 30 | 31 | 47 |
| M24 | 6 | 64 | 38.75 | 64 | 65.2 | — | 130 | 40 | 41.25 | 62.8 |
| M30 | 6 | 80 | 48.75 | 80 | 81.2 | — | 172 | 50 | 51.25 | 78.8 |
| M8 | 1.5 | 10 | 6.55 | 10 | 10.58 | 26 | — | 7 | 7.45 | 9.42 |
© 2026 Ningbo Ruixi Metal Surface Technology Co., Ltd.. All rights reserved.