Standard: ASME B 18.6
Available sizes: 2# to 8# (6 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|
| 2# | 0.0990 | 0.059 | 0.035 | 7/32 | 0.187 | 0.027 | 0.017 | 0.167 | 0.027 |
| 3# | 0.1250 | 0.075 | 0.043 | 1/4 | 0.237 | 0.034 | 0.022 | 0.215 | 0.035 |
| 4# |
| 0.1640 |
| 0.100 |
| 0.054 |
| 7/16 |
| 0.312 |
| 0.045 |
| 0.029 |
| 0.285 |
| 0.045 |
| 5# | 0.2160 | 0.132 | 0.067 | 9/16 | 0.412 | 0.060 | 0.039 | 0.380 | 0.056 |
| 6# | 0.3125 | 0.191 | 0.084 | 5/8 | 0.597 | 0.088 | 0.058 | 0.556 | 0.072 |
| 8# | 0.3750 | 0.230 | 0.094 | 5/8 | 0.717 | 0.106 | 0.070 | 0.670 | 0.081 |
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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