Standard: ANSI B 18.13 - 1996
Available sizes: 2# to 8# (6 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| 2# | 0.0990 | 0.044 | 0.168 | 0.156 | 0.091 | 0.086 | 0.181 | 0.055 | 0.020 | 0.188 |
| 3# | 0.1250 | 0.058 | 0.220 | 0.207 | 0.118 | 0.113 | 0.181 | 0.070 | 0.031 |
| 0.188 |
| 4# | 0.1640 | 0.096 | 0.271 | 0.259 | 0.155 | 0.149 | 0.244 | 0.110 | 0.040 | 0.250 |
| 5# | 0.2160 | 0.139 | 0.351 | 0.336 | 0.203 | 0.196 | 0.305 | 0.155 | 0.056 | 0.312 |
| 6# | 0.3125 | 0.208 | 0.556 | 0.540 | 0.298 | 0.290 | 0.489 | 0.230 | 0.078 | 0.500 |
| 8# | 0.3750 | 0.270 | 0.651 | 0.635 | 0.361 | 0.353 | 0.551 | 0.295 | 0.094 | 0.562 |
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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