Standard: ANSI B 18.8
Available sizes: Φ1.5 to Φ6 (7 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|
| Φ1.5 | 2.008 | 1.9 | 1.7 | 2.003 | 2.03 | 0.2 | 2.025 | 0.6 |
| Φ2 | 3.008 | 2.9 | 2.6 | 3.003 | 3.03 | 0.3 | 3.025 | 0.8 |
| Φ2.5 | 5.009 | 4.9 | 4.6 | 5.004 | 5.031 |
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.
| 0.4 |
| 5.026 |
| 1 |
| Φ3 | 8.012 | 7.8 | 7.4 | 8.006 | 8.034 | 0.5 | 8.028 | 1.3 |
| Φ4 | 12.013 | 11.8 | 11.4 | 12.007 | 12.035 | 0.6 | 12.029 | 1.6 |
| Φ5 | 20.014 | 19.8 | 19.3 | 20.008 | 20.036 | 0.8 | 20.03 | 2 |
| Φ6 | 25.014 | 24.8 | 24.3 | 25.008 | 25.036 | 1 | 25.03 | 2.3 |
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