Standard: ASTM F 436 - 2024
Available sizes: 1/2 to 9/16 (6 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 1.063 | 0.136 | 0.177 | 1.126 | 1.937 | 0.375 | 0.875 | 2.063 | 0.305 |
| 1/4 | 0.344 | 0.051 | 0.08 | 0.376 | 0.656 | / | 0.281 | 0.720 | / |
| 3/8 |
| 0.625 |
| 0.11 |
| 0.177 |
| 0.657 |
| 1.156 |
| 0.375 |
| 0.500 |
| 1.220 |
| 0.305 |
| 5/16 | 0.469 | 0.051 | 0.08 | 0.501 | 0.890 | / | 0.406 | 0.954 | / |
| 7/16 | 0.813 | 0.122 | 0.177 | 0.845 | 1.436 | 0.375 | 0.656 | 1.500 | 0.305 |
| 9/16 | 1.375 | 0.136 | 0.177 | 1.438 | 2.437 | 0.375 | 1.094 | 2.563 | 0.305 |
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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