Standard: ANSI B 18.3 - 2003
Available sizes: 0# to 4# (5 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|
| 0# | 0.0730 | 0.130 | 4 | 0.033 | 64.0 | 72.0 | 0.040 | 0.033 | 0.035 |
| 1# | 0.0990 | 0.130 | 4\6 | 0.048 | 48.0 | 56.0 | 0.054 | 0.045 | 0.040 |
| 2# |
| 0.1250 |
| 0.130 |
| 4 |
| 0.072 |
| 40.0 |
| 44.0 |
| 0.067 |
| 0.057 |
| 0.055 |
| 3# | 0.1640 | 0.190 | 6 | 0.096 | 32.0 | 36.0 | 0.087 | 0.076 | 0.080 |
| 4# | 0.1900 | 0.190 | 4 | 0.111 | 24.0 | 32.0 | 0.102 | 0.088 | 0.080 |
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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