Standard: ASME B 18.3
Available sizes: 1# to 8# (6 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| 1# | 0.086 | 0.069 | 0.038 | 0.164 | 0.154 | 56 | 64 | 0.096 | 0.046 | 0.106 |
| 2# | 0.125 | 0.111 | 0.058 | 0.238 | 0.226 | 40 | 44 | 0.135 | 0.066 | 0.145 |
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.
| 4# | 0.164 | 0.132 | 0.077 | 0.312 | 0.298 | 32 | 36 | 0.184 | 0.087 | 0.194 |
| 5# | 0.25 | 0.200 | 0.122 | 0.437 | 0.419 | 20 | 28 | 0.280 | 0.132 | 0.290 |
| 6# | 0.375 | 0.312 | 0.185 | 0.656 | 0.636 | 16 | 24 | 0.405 | 0.199 | 0.415 |
| 8# | 0.625 | 0.529 | 0.311 | 1 | 0.97 | 11 | 18 | 0.665 | 0.331 | 0.685 |
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