Standard: ASME B 18.3
Available sizes: 1/2 to 5/32 (7 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 6 | 0.937 | 1.25 | 1.996 | 2.75 | 1-1/2 | 1.5000 | 1.25 | 1.23 | 1.998 | 2.72 |
| 1/4 | 13 | 0.234 | 0.312 | 0.621 | 0.875 | 1/2 | 0.5000 |
| 0.375 |
| 0.365 |
| 0.623 |
| 0.853 |
| 1/8 | 32 | 0.067 | 0.094 | 0.152 | 0.281 | 6# | 0.1380 | 0.125 | 0.115 | 0.154 | 0.266 |
| 3/16 | 18 | 0.141 | 0.188 | 0.371 | 0.562 | 5/16 | 0.3125 | 0.25 | 0.24 | 0.373 | 0.543 |
| 3/8 | 7 | 0.656 | 0.875 | 1.496 | 2.125 | 1-1/8 | 1.1250 | 1 | 0.98 | 1.498 | 2.095 |
| 5/16 | 10 | 0.375 | 0.5 | 0.996 | 1.312 | 3/4 | 0.7500 | 0.625 | 0.61 | 0.998 | 1.287 |
| 5/32 | 24 | 0.094 | 0.125 | 0.246 | 0.375 | 10# | 0.1900 | 0.188 | 0.177 | 0.248 | 0.357 |
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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