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 | 1.407 | 1.313 | 1.588 | 2.563 | 1.500 | 2.438 | 0.938 |
| 1-1/8 | 1.790 | 1.501 | 1.407 | 1.713 | 2.765 | 1.594 | 2.625 | 1.032 |
| 1/2 | 0.655 | 0.625 | 0.578 |
| 0.600 |
| 1.032 |
| 0.750 |
| 0.938 |
| 0.188 |
| 3/4 | 1.160 | 1.016 | 0.938 | 1.098 | 1.813 | 1.125 | 1.688 | 0.563 |
| 5/8 | 0.905 | 0.812 | 0.750 | 0.850 | 1.422 | 0.937 | 1.313 | 0.375 |
| 7/8 | 1.415 | 1.203 | 1.125 | 1.345 | 2.188 | 1.312 | 2.063 | 0.750 |
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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