Standard: ASME B 18.6
Available sizes: 0# to 6# (7 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| 0# | 0.0730 | 0.024 | 0.043 | 0.025 | 3/16 | 0.137 | 0.092 | 0.048 | 0.120 | 0.068 |
| 1# | 0.0990 | 0.030 | 0.059 | 0.033 | 7/32 | 0.187 | 0.133 | 0.072 | 0.167 |
| 0.092 |
| 2# | 0.1250 | 0.035 | 0.075 | 0.041 | 1/4 | 0.237 | 0.169 | 0.094 | 0.215 | 0.116 |
| 3# | 0.1510 | 0.040 | 0.091 | 0.049 | 3/8 | 0.287 | 0.206 | 0.118 | 0.262 | 0.140 |
| 4# | 0.1900 | 0.048 | 0.116 | 0.060 | 1/2 | 0.362 | 0.260 | 0.148 | 0.333 | 0.176 |
| 5# | 0.2500 | 0.061 | 0.153 | 0.079 | 5/8 | 0.477 | 0.344 | 0.195 | 0.442 | 0.232 |
| 6# | 0.3125 | 0.074 | 0.191 | 0.099 | 13/16 | 0.597 | 0.432 | 0.252 | 0.556 | 0.290 |
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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