Standard: ASME B 18.2
Available sizes: 1/2 to 9/16 (7 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 8 | 1 | E32 | 0.355 | 0.343 | 1.138 | 1.063 | 1.479 | 0.8393 | 1.053 | 1.5 |
| 1/4 | 18 | 0.3125 | E10 | 0.1 | 0.09 | 0.362 | 0.323 | 0.457 | 0.2663 | 0.313 | 0.469 |
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 | 12 | 0.5625 | E18 | 0.165 | 0.153 | 0.645 | 0.551 | 0.828 | 0.4663 | 0.541 | 0.844 |
| 5/16 | 14 | 0.4375 | E14 | 0.155 | 0.145 | 0.499 | 0.472 | 0.642 | 0.3613 | 0.462 | 0.656 |
| 5/8 | 6 | 1.375 | E44 | 0.453 | 0.441 | 1.562 | 1.417 | 2.038 | 1.1513 | 1.407 | 2.062 |
| 7/16 | 10 | 0.75 | E24 | 0.255 | 0.243 | 0.86 | 0.787 | 1.107 | 0.6183 | 0.777 | 1.125 |
| 9/16 | 7 | 1.25 | E40 | 0.422 | 0.41 | 1.42 | 1.299 | 1.852 | 1.0463 | 1.289 | 1.875 |
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