Standard: IFI 513 - 1982
Available sizes: M2 to M4 (5 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|
| M2 | 0.45 | 3.82 | 2.1 | 2.50 | 2.12 | 4.28 | 25 | 4.00 | 1.8 |
| M2.5 | 0.6 | 5.32 | 2.6 | 3.50 | 3.00 | 5.96 | 38 | 5.50 | 2.3 |
| M3 | 0.8 | 7.78 | 3.8 | 5.00 | 4.36 |
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.
| 8.71 |
| 38 |
| 8.00 |
| 3.3 |
| M3.5 | 1.25 | 12.73 | 6.0 | 8.00 | 7.04 | 14.26 | 38 | 13.00 | 5.2 |
| M4 | 1.75 | 17.73 | 9.0 | 12.00 | 10.68 | 19.86 | 38 | 18.00 | 7.8 |
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