Standard: ASME B 18.6
Available sizes: 2# to 8# (7 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| 2# | 0.0990 | 0.010 | 0.055 | 0.044 | 0.125 | 0.120 | 0.163 | 0.016 | 0.134 | 0.177 |
| 3# | 0.1250 | 0.015 | 0.070 | 0.058 | 0.188 | 0.181 | 0.240 | 0.025 | 0.202 |
| 0.260 |
| 4# | 0.1510 | 0.017 | 0.093 | 0.080 | 0.250 | 0.244 | 0.302 | 0.029 | 0.272 | 0.328 |
| 5# | 0.1900 | 0.019 | 0.120 | 0.105 | 0.312 | 0.305 | 0.384 | 0.031 | 0.340 | 0.414 |
| 6# | 0.2500 | 0.030 | 0.190 | 0.172 | 0.375 | 0.367 | 0.480 | 0.050 | 0.409 | 0.520 |
| 7# | 0.3750 | 0.037 | 0.295 | 0.270 | 0.562 | 0.551 | 0.720 | 0.063 | 0.614 | 0.780 |
| 8# | 0.5000 | 0.050 | 0.400 | 0.367 | 0.750 | 0.735 | 0.960 | 0.085 | 0.820 | 1.040 |
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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