Standard: ASME B 18.6
Available sizes: 1/4 to 8# (6 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/4 | 0.5625 | 0.783 | 0.279 | 0.190 | 0.165 | 12 | T55 | 1.149 | 0.312 | 0.446 | 1.198 |
| 10# | 0.3125 | 0.457 | 0.162 | 0.095 | 0.080 | 18 | T40 |
| 0.666 |
| 0.183 |
| 0.266 |
| 0.698 |
| 12# | 0.4375 | 0.619 | 0.221 | 0.155 | 0.130 | 14 | T45 | 0.907 | 0.248 | 0.312 | 0.948 |
| 5/16 | 0.7500 | 1.024 | 0.368 | 0.230 | 0.210 | 10 | T60 | 1.511 | 0.410 | 0.529 | 1.573 |
| 6# | 0.1640 | 0.254 | 0.088 | 0.055 | 0.045 | 32 | T15 | 0.364 | 0.102 | 0.132 | 0.384 |
| 8# | 0.2160 | 0.336 | 0.118 | 0.090 | 0.070 | 24 | T25 | 0.487 | 0.134 | 0.178 | 0.511 |
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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