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 | 0.226 | 0.028 | 0.036 | 0.023 | 48 | 0.035 | 0 | 0.038 | 0.027 | 0.070 |
| 3# | 0.1250 | 0.289 | 0.040 | 0.045 | 0.030 | 40 | 0.043 |
| 1S |
| 0.055 |
| 0.035 |
| 0.091 |
| 4# | 0.1640 | 0.384 | 0.048 | 0.058 | 0.040 | 32 | 0.054 | 1S | 0.063 | 0.045 | 0.112 |
| 5# | 0.2160 | 0.511 | 0.065 | 0.077 | 0.055 | 24 | 0.067 | 3S | 0.080 | 0.056 | 0.133 |
| 6# | 0.3125 | 0.698 | 0.085 | 0.106 | 0.076 | 18 | 0.084 | 4R | 0.100 | 0.072 | 0.191 |
| 8# | 0.3750 | 0.823 | 0.085 | 0.124 | 0.090 | 16 | 0.094 | 4R | 0.100 | 0.081 | 0.191 |
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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