Standard: JIS D 2701 - 1993
Available sizes: M16 to M30 (6 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal |
|---|---|---|---|---|---|---|
| M16 | 1.5 | 25~26 | 22 | 28~33 | 38 | 41 |
| M25 | 1.5 | 20~24 | 22 | 28~29 | / | 36(35) |
| M26 | 1.5 | 25~26 | 22 | 32~33 | 38 | 41(38) |
| M27 | 1.5 | 20~24 | 22 |
| 28~29 |
| / |
| 36(35) |
| M28 | 1.5 | 22~26 | 22 | 28~33 | 38 | 41 |
| M30 | 1.5 | 23~26 | 22 | 28~33 | 38 | 41 |
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.