Standard: NF E 25
Available sizes: M1.6 to M3.5 (5 sizes)
| Standard Body | Standard Number |
|---|---|
| GB | GB /T 818 |
| NF | NF E 25-121 |
| DIN | DIN EN ISO 7045 |
| ISO | ISO 7045 |
| UNI | UNI 7687 |
| Size | P | k_max | k_min | s_max | s_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|
| M1.6 | 0.4 | 1.60 | 1.46 | 25 |
| 4.0 |
| 3.7 |
| 0 |
| M2 | 0.5 | 2.40 | 2.26 | 25 | 5.6 | 5.3 | 1 |
| M2.5 | 0.7 | 3.10 | 2.92 | 38 | 8.00 | 7.64 | 2 |
| M3 | 1 | 4.6 | 4.3 | 38 | 12.00 | 11.57 | 3 |
| M3.5 | 1.5 | 7.50 | 7.14 | 38 | 20.00 | 19.48 | 4 |
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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