Standard: NF E 25
Available sizes: Φ1.5 to Φ6 (7 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| Φ1.5 | 2 | 8~30 | 2.2 | 0.18 | 1.975 | 2.15 | 0.25 | 2.84 | 2.15 | 0.8 |
| Φ2 | 3 | 10~40 | 3.25 | 0.3 | 2.975 | 3.2 | 0.4 | 6.4 | 3.15 |
| 1.2 |
| Φ2.5 | 5 | 14~60 | 5.3 | 0.5 | 4.925 | 5.25 | 0.63 | 17.6 | 5.2 | 1.7 |
| Φ3 | 8 | 14~100 | 8.35 | 0.8 | 7.91 | 8.3 | 1 | 45.2 | 8.25 | 2.6 |
| Φ4 | 12 | 18~100 | 12.45 | 1.2 | 11.89 | 12.35 | 1.6 | 101.8 | 12.25 | 3.8 |
| Φ5 | 20 | 26~100 | 20.6 | 2 | 19.87 | 20.5 | 2.5 | 283 | 20.4 | 6 |
| Φ6 | 25 | 26~100 | 25.6 | 2.5 | 24.87 | 25.5 | 3 | 444 | 25.4 | 7.5 |
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.
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