Standard: ANSI B 18.3 - 2003
Available sizes: 0# to 6# (7 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| 0# | 0.073 | 0.50 | 0.028 | 0.139 | 0.129 | 64.0 | 72.0 | 0.033 | 0.060 | 0.039 |
| 1# | 0.099 | 0.50 | 0.035 | 0.188 | 0.176 | 48.0 | 56.0 | 0.044 | 0.072 |
| 0.052 |
| 2# | 0.125 | 0.50 | 0.044 | 0.238 | 0.226 | 40.0 | 44.0 | 0.058 | 0.096 | 0.066 |
| 3# | 0.164 | 0.75 | 0.052 | 0.312 | 0.298 | 32.0 | 36.0 | 0.077 | 0.111 | 0.087 |
| 4# | 0.250 | 1.00 | 0.087 | 0.437 | 0.419 | 20.0 | 28.0 | 0.122 | 0.183 | 0.132 |
| 5# | 0.375 | 1.25 | 0.122 | 0.656 | 0.636 | 16.0 | 24.0 | 0.185 | 0.251 | 0.199 |
| 6# | 0.625 | 2.00 | 0.210 | 1.000 | 0.970 | 11.0 | 18.0 | 0.311 | 0.454 | 0.331 |
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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