Standard: ASME B 18.6
Available sizes: 1# to 8# (8 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1# | 0.0860 | / | 0.040 | / | / | 32 | 0.125 | / | 0.050 | 0.120 | 0.134 |
| 2# | 0.1120 | 0.039 | 0.049 | 0.219 | 0.213 | 24 | 0.188 |
| 0.238 |
| 0.060 |
| 0.181 |
| 0.202 |
| 3# | 0.1380 | 0.048 | 0.080 | / | / | 20 | 0.250 | / | 0.093 | 0.244 | 0.272 |
| 4# | 0.1640 | 0.054 | 0.096 | 0.312 | 0.305 | 18 | 0.250 | 0.340 | 0.110 | 0.244 | 0.272 |
| 5# | 0.2160 | 0.067 | 0.139 | 0.375 | 0.367 | 14 | 0.312 | 0.409 | 0.155 | 0.305 | 0.340 |
| 6# | 0.3125 | 0.084 | 0.208 | / | / | 12 | 0.500 | / | 0.230 | 0.489 | 0.545 |
| 7# | 0.4375 | / | 0.321 | / | / | 10 | 0.625 | / | 0.348 | 0.610 | 0.682 |
| 8# | 0.5000 | / | 0.367 | / | / | 10 | 0.750 | / | 0.400 | 0.735 | 0.820 |
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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