Standard: IFI 145 - 2002
Available sizes: 1/4 to 7/16 (4 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| 1/4 | 18 | 0.557 | 0.489 | 0.820 | 0.375 | 0.343 | 0.04 | 0.577 | 0.500 | 0.790 |
| 3/8 | 12 | 0.982 | 0.861 | 1.300 | 0.578 | 0.546 | 0.06 | 1.010 | 0.875 | 1.260 |
| 5/16 | 14 |
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.
| 0.768 |
| 0.675 |
| 1.131 |
| 0.468 |
| 0.437 |
| 0.04 |
| 0.794 |
| 0.688 |
| 1.100 |
| 7/16 | 11 | 1.051 | 0.922 | 1.360 | 0.640 | 0.600 | 0.06 | 1.083 | 0.938 | 1.280 |
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