Standard: IFI 513 - 1982
Available sizes: M2 to M4 (5 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| M2 | 0.45 | 25 | 3.04 | 3.39 | 2.50 | 2.12 | / | / | 3.20 | / |
| M2.5 | 0.6 | 38 | 4.82 | 5.36 | 3.50 | 3.00 | / | / | 5.00 | / |
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.
| M3 | 0.8 | 38 | 6.78 | 7.55 | 5.00 | 4.36 | / | 5.6 | 7.00 | 11.4 |
| M3.5 | 1.25 | 38 | 9.78 | 10.89 | 8.00 | 7.04 | / | 9 | 10.00 | 17 |
| M4 | 1.75 | 38 | 14.72 | 16.38 | 12.00 | 10.68 | / | 13.5 | 15.00 | 24.7 |
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