Standard: ANSI B 18.1
Available sizes: 1 to 7/8 (6 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|
| 1 | 1.665 | 1.719 | 1.594 | 1.588 | 2.694 | 1.138 | 2.569 | 1.201 |
| 1-1/8 | 1.790 | 1.859 | 1.719 | 1.713 | 2.909 | 1.225 | 2.769 | 1.288 |
| 1/2 | 0.655 | 0.688 | 0.594 |
| 0.600 |
| 1.063 |
| 0.438 |
| 0.969 |
| 0.469 |
| 3/4 | 1.160 | 1.219 | 1.094 | 1.098 | 1.894 | 0.788 | 1.769 | 0.835 |
| 5/8 | 0.905 | 0.953 | 0.844 | 0.850 | 1.478 | 0.612 | 1.369 | 0.643 |
| 7/8 | 1.415 | 1.469 | 1.344 | 1.345 | 2.294 | 0.962 | 2.169 | 1.009 |
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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