Standard: ASME B 18.2
Available sizes: 1/2 to 7/16 (5 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 1 | 0.416 | 0.591 | 1.469 | 1.732 | 0.99 | 1-1/2 | 39/64 | 0.627 | 1.5 | 1.675 |
| 1/4 | 0.3125 | 0.14 | 0.195 | 0.489 | 0.577 | 0.3065 | 1/2 | 13/64 | 0.211 | 0.5 | 0.557 |
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.
| 3/8 | 0.5625 | 0.25 | 0.348 | 0.798 | 0.938 | 0.5545 | 13/16 | 23/64 | 0.371 | 0.812 | 0.91 |
| 5/16 | 0.4375 | 0.195 | 0.272 | 0.612 | 0.722 | 0.4305 | 5/8 | 9/32 | 0.291 | 0.625 | 0.698 |
| 7/16 | 0.75 | 0.324 | 0.455 | 1.1 | 1.299 | 0.741 | 1-1/8 | 15/32 | 0.483 | 1.125 | 1.254 |
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