Standard: ASME B 18.27
Available sizes: 0.669 to 5/8 (6 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.669 | NA15-98 | 3.311 | 1.166 | 0.188 | 0.194 | 0.863 | 0.867 | 1.172 | 1.178 | 0.859 | 0.182 |
| 1/2 | NA15-62 | 0.826 | 0.736 | 0.105 | 0.110 | 0.569 |
| 0.571 |
| 0.740 |
| 0.744 |
| 0.567 |
| 0.100 |
| 15/32 | NA15-50 | 0.680 | 0.622 | 0.105 | 0.110 | 0.459 | 0.461 | 0.625 | 0.628 | 0.457 | 0.100 |
| 19/32 | NA15-75 | 1.588 | 0.889 | 0.135 | 0.141 | 0.673 | 0.676 | 0.894 | 0.899 | 0.670 | 0.129 |
| 3/4 | NA15-112 | 3.583 | 1.305 | 0.188 | 0.194 | 1.002 | 1.006 | 1.311 | 1.317 | 0.998 | 0.182 |
| 5/8 | NA15-87 | 1.724 | 1.011 | 0.135 | 0.141 | 0.796 | 0.799 | 1.017 | 1.023 | 0.793 | 0.129 |
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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