Standard: ASME B 18.6
Available sizes: 2# to 8# (6 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2# | 0.0990 | 82° | 0.033 | 0.038 | 0.028 | 48 | 0 | 0.167 | 0.042 | 0.070 | 0.187 |
| 3# | 0.1250 | 82° | 0.041 | 0.065 | 0.050 | 40 | 1R |
| 0.215 |
| 0.053 |
| 0.091 |
| 0.237 |
| 4# | 0.1640 | 82° | 0.052 | 0.075 | 0.060 | 32 | 2R | 0.285 | 0.070 | 0.112 | 0.312 |
| 5# | 0.2160 | 82° | 0.068 | 0.095 | 0.080 | 24 | 3R | 0.380 | 0.092 | 0.133 | 0.412 |
| 6# | 0.3125 | 82° | 0.099 | 0.100 | 0.085 | 18 | 4R | 0.556 | 0.134 | 0.191 | 0.597 |
| 8# | 0.3750 | 82° | 0.117 | 0.100 | 0.085 | 16 | 4R | 0.670 | 0.161 | 0.191 | 0.717 |
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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