Standard: NF E 25
Available sizes: M1.6 to M4 (5 sizes)
| Standard Body | Standard Number |
|---|---|
| EN | EN 24017 |
| GB | GB /T 5783 |
| IS | IS 1364(-2) |
| NF | NF E 25-114 |
| DIN | DIN EN ISO 4017 |
| ISO | ISO 4017 |
| UNI | UNI 5739 |
| ANSI | ANSI/ASME B 18.2.3.1M |
| Size | P | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|
| M1.6 | 0.40 | 1.2 | 4 | 1.525 | 1.275 | 4 | 3.7 | 1.6 | 3.82 |
| M2 | 0.50 | 1.8 | 5.5 | 2.125 | 1.875 | 5.5 | 5.2 | 2.2 | 5.32 |
| M2.5 | 0.80 |
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.
| 3.26 |
| 8 |
| 3.65 |
| 3.35 |
| 8 |
| 7.64 |
| 3.74 |
| 7.78 |
| M3 | 1.25 | 5.06 | 13 | 5.45 | 5.15 | 13 | 12.57 | 5.54 | 12.73 |
| M4 | 1.75 | 7.21 | 18 | 7.68 | 7.32 | 18 | 17.57 | 7.79 | 17.73 |
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