Standard: ASME B 18.2
Available sizes: 1/4 to 7/16 (4 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/4 | 18 | 0.32 | 0.05 | 0.5 | 0.489 | 24 | 0.3125 | 0.548 | 0.68 | 0.3065 | 0.577 |
| 3/8 | 12 | 0.57 | 0.09 | 0.8125 | 0.798 | 18 | 0.5625 | 0.895 |
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.
| 1.19 |
| 0.5545 |
| 0.938 |
| 5/16 | 14 | 0.46 | 0.07 | 0.625 | 0.612 | 20 | 0.4375 | 0.685 | 0.93 | 0.4305 | 0.722 |
| 7/16 | 10 | 0.73 | 0.11 | 1.125 | 1.1 | 16 | 0.75 | 1.234 | 1.59 | 0.741 | 1.299 |
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