Standard: ASME B 18.31
Available sizes: 10# to 8# (6 sizes)
| Size | P | k_max | s_max | k_nominal |
|---|---|---|---|---|
| 10# | 0.4370 | 12 | 14 | 20 |
| 12# | 0.5620 | — | 12 | 18 |
| 4# | 0.1250 | — | 40 | 44 |
| 5# | 0.1640 | — | 32 | 36 |
| 6# | 0.2160 | — | 24 | 28 |
| 8# |
| 0.3125 |
| 14 |
| 18 |
| 24 |
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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