Standard: ASME B 18.6
Available sizes: 4# to 8# (5 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 4# | 20 | 0.087 | 0.058 | 0.090 | 0.188 | 0.130 | 0.123 | 0.202 | 0.070 | 0.094 | 0.181 |
| 5# | 19 | 0.105 | 0.080 | 0.109 | 0.250 | 0.154 | 0.147 |
| 0.272 |
| 0.093 |
| 0.115 |
| 0.244 |
| 6# | 16 | 0.130 | 0.105 | 0.135 | 0.312 | 0.189 | 0.182 | 0.340 | 0.120 | 0.141 | 0.305 |
| 7# | 14 | 0.179 | 0.172 | 0.185 | 0.375 | 0.246 | 0.237 | 0.409 | 0.190 | 0.192 | 0.367 |
| 8# | 12 | 0.293 | 0.270 | 0.299 | 0.562 | 0.380 | 0.371 | 0.614 | 0.295 | 0.309 | 0.551 |
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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