Standard: NF E 25
Available sizes: 10 to 8 (5 sizes)
| Standard Body | Standard Number |
|---|---|
| NF | NF E 25-607 |
| DIN | DIN 571 |
| UNI | UNI 704 |
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| 10 | 7 | 2 | 13.4 | 11.6 | 20 | 19.16 | 29.16 | 32.9 | 12.5 | 30 |
| 5 | 2.5 | 0.5 | 4.38 | 3.62 | 6 | 5.52 | 9.64 | 10.8 | 4 | 10 |
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.
| 6 | 3.5 | 1 | 5.68 | 4.92 | 8 | 7.42 | 12.57 | 14.2 | 5.3 | 13 |
| 7 | 4.5 | 1.2 | 7.95 | 7.05 | 12 | 11.3 | 18.16 | 20.5 | 7.5 | 19 |
| 8 | 6 | 1.6 | 10.75 | 9.25 | 16 | 15.3 | 23.16 | 26.1 | 10 | 24 |
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