Standard: ANSI B 18.1
Available sizes: 1 to 7/8 (6 sizes)
| Size | P | k_max | s_max | s_min | k_nominal |
|---|---|---|---|---|---|
| 1 | 1.665 | 0.831 | 1.588 | 3.019 | 2.878 |
| 1-1/8 | 1.790 | 0.901 | 1.713 | 3.262 | 3.121 |
| 1/2 | 0.655 | 0.339 | 0.600 | 1.194 | 1.112 |
| 3/4 | 1.160 | 0.589 | 1.098 | 2.114 | 1.973 |
| 5/8 |
| 0.905 |
| 0.460 |
| 0.850 |
| 1.647 |
| 1.532 |
| 7/8 | 1.415 | 0.710 | 1.345 | 2.567 | 2.426 |
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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