Standard: ASME B 18.6
Available sizes: 3# to 8# (5 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| 3# | 0.1120 | 0.075 | 0.038 | 0.028 | 40 | 0 | 0.193 | 0.086 | 0.070 | 0.211 |
| 4# | 0.1380 | 0.091 | 0.065 | 0.050 | 32 | 1R | 0.240 | 0.103 | 0.091 |
| 0.260 |
| 5# | 0.1900 | 0.123 | 0.075 | 0.060 | 24 | 2R | 0.334 | 0.137 | 0.112 | 0.359 |
| 6# | 0.2500 | 0.160 | 0.095 | 0.080 | 20 | 3R | 0.443 | 0.175 | 0.133 | 0.472 |
| 8# | 0.3750 | 0.237 | 0.100 | 0.085 | 16 | 4R | 0.670 | 0.256 | 0.191 | 0.708 |
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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