Standard: NF E 25
Available sizes: 1.6 to 4 (6 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1.6 | 1 | 0.4 | 0.6 | 3.5 | 1.1 | 2 | 1.6 | 0.7 | 0.56 | 3.8 | 0.5 |
| 2 | 1.5 | 0.6 | 0.85 | 5.2 | 1.65 | 3 | 2.6 |
| 1 |
| 0.86 |
| 5.5 |
| 0.8 |
| 2.5 | 1.75 | 1 | 1.3 | 8 | 2.7 | 4 | 3.52 | 1.51 | 1.26 | 8.4 | 1.2 |
| 3 | 2 | 1.1 | 1.4 | 8.9 | 2.7 | 5 | 4.52 | 1.51 | 1.26 | 9.3 | 1.2 |
| 3.5 | 3 | 1.6 | 2 | 12.6 | 3.6 | 7 | 6.42 | 2.31 | 2.06 | 13 | 2 |
| 4 | 3.5 | 1.8 | 2.3 | 15.4 | 4.65 | 8 | 7.42 | 2.31 | 2.06 | 15.8 | 2 |
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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