Standard: DIN 2986 - 1977
Available sizes: 10 to 8 (7 sizes)
| Size | P | s_max | s_min |
|---|---|---|---|
| 10 | R1 | 39.5 | 43 |
| 15 | R1-1/2 | 54.5 | 48 |
| 20 | R2-1/2 | 82 | 65 |
| 25 | R4 | 122 | 83 |
| 32 | R6 | 174 | 92 |
| 6 | R1/4 | 18.5 | 25 |
| 8 | R1/2 | 26.4 | 34 |
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.