Standard: ASME B 18.15
Available sizes: 1/4 to 7/16 (4 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|
| 1/4 | 0.34 | 1.44 | 0.31 | 1.19 | 1.13 | 0.81 | 0.75 | 0.94 | 2.75 |
| 3/8 | 0.59 | 2.25 | 0.53 | 1.75 | 1.34 | 1.25 | 0.84 | 1.31 | 4.12 |
| 5/16 |
| 0.47 |
| 1.81 |
| 0.41 |
| 1.50 |
| 1.25 |
| 1.00 |
| 0.75 |
| 1.12 |
| 3.44 |
| 7/16 | 0.78 | 2.81 | 0.69 | 2.12 | 1.62 | 1.62 | 1.13 | 1.56 | 5.06 |
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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