Standard: ANSI B 18.1
Available sizes: 1/4 to 7/32 (6 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|
| 1/4 | 0.443 | 0.157 | 0.135 | 0.428 | 1.020 | 0.990 | 1.098 |
| 1/8 | 0.191 | 0.069 | 0.055 | 0.182 | 0.442 | 0.422 | 0.47 |
| 3/16 | 0.316 | 0.113 | 0.095 | 0.304 | 0.732 | 0.702 | 0.784 |
| 3/32 | 0.127 | 0.048 | 0.036 | 0.121 | 0.297 | 0.277 | 0.314 |
| 5/32 | 0.253 | 0.091 | 0.075 | 0.244 | 0.590 | 0.560 | 0.628 |
| 7/32 | 0.380 | 0.135 | 0.115 | 0.365 | 0.878 | 0.848 | 0.942 |
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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