Standard: ANSI B 18.1
Available sizes: (Φ1) to Φ2 (5 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|
| (Φ1) | 1.25 | 1.90 | 0.72 | 1.15 | 2.10 | 0.60 | 1.13 | 2.30 | 0.84 |
| (Φ1.2) | 1.65 | 2.55 | 0.96 | 1.55 | 2.80 | 0.84 | 1.5 | 3.05 | 1.08 |
| (Φ1.4) |
| 2.55 |
| 4.13 |
| 1.50 |
| 2.42 |
| 4.38 |
| 1.38 |
| 2.35 |
| 4.63 |
| 1.62 |
| Φ1.6 | 3.56 | 5.88 | 2.10 | 3.40 | 6.13 | 1.95 | 3.29 | 6.38 | 2.25 |
| Φ2 | 4.06 | 6.72 | 2.40 | 3.90 | 7.00 | 2.35 | 3.75 | 7.28 | 2.55 |
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.