Standard: ASME B 18.9 - 2012
Available sizes: 1/2 to 9/16 (5 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|
| 1/2 | 0.8750 | 1.297 | 1.199 | 0.938 | 0.853 | 1-17/64 | 0.080 |
| 3/8 | 0.5000 | 0.781 | 0.707 | 0.500 | 0.438 | 49/64 | 0.070 |
| 5/16 | 0.3750 | 0.656 | 0.599 | 0.375 | 0.360 | 41/64 | 0.050 |
| 7/16 | 0.6250 | 0.984 | 0.886 | 0.657 | 0.606 | 61/64 | 0.080 |
| 9/16 | 1.0000 | 1.484 | 1.386 | 1.062 | 0.976 | 1-29/64 | 0.080 |
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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