Standard: ASME B 18.2
Available sizes: 1/2 to 7/16 (7 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 1.1250 | 0.780 | 3/4 | 1-11/16 | 1.688 | 7 | 1.149 | 2.386 | 2.239 | 1.098 | 1.631 |
| 1/4 | 0.3125 | 0.220 | 13/64 | 1/2 | 0.500 | 18 | 0.324 |
| 0.707 |
| 0.665 |
| 0.298 |
| 0.484 |
| 3/4 | 1.5000 | 1.036 | 1 | 2-1/4 | 2.250 | 6 | 1.531 | 3.182 | 2.986 | 1.470 | 2.175 |
| 3/8 | 0.6250 | 0.444 | 27/64 | 15/16 | 0.938 | 11 | 0.642 | 1.326 | 1.244 | 0.605 | 0.906 |
| 5/16 | 0.4375 | 0.316 | 19/64 | 5/8 | 0.625 | 14 | 0.452 | 0.884 | 0.828 | 0.421 | 0.603 |
| 5/8 | 1.3750 | 0.940 | 29/32 | 2-1/16 | 2.062 | 6 | 1.404 | 2.917 | 2.738 | 1.345 | 1.994 |
| 7/16 | 0.8750 | 0.620 | 19/32 | 1-5/16 | 1.312 | 9 | 0.895 | 1.856 | 1.742 | 0.852 | 1.269 |
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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