Standard: ANSI B 18.23
Available sizes: 1/2 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 1.000 | 0.39 | 0.25 | 0.56 | 0.53 | 2.00 | 1.97 | 0.22 | 0.19 | 2.03 | 0.59 |
| 1/4 | 0.312 | 0.23 | 0.19 | 0.31 | 0.28 | 1.00 | 0.97 | 0.16 |
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.
| 0.13 |
| 1.03 |
| 0.34 |
| 3/4 | 1.500 | 0.56 | 0.34 | 0.81 | 0.78 | 3.00 | 2.97 | 0.31 | 0.28 | 3.03 | 0.84 |
| 3/8 | 0.750 | 0.31 | 0.22 | 0.44 | 0.41 | 1.50 | 1.47 | 0.19 | 0.16 | 1.53 | 0.47 |
| 5/16 | 0.500 | 0.23 | 0.15 | 0.34 | 0.31 | 1.25 | 1.22 | 0.12 | 0.09 | 1.28 | 0.37 |
| 5/8 | 1.250 | 0.52 | 0.34 | 0.72 | 0.69 | 2.25 | 2.22 | 0.31 | 0.28 | 2.28 | 0.75 |
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