Standard: ANSI B 18.8
Available sizes: 1.5 to 4 (5 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal |
|---|---|---|---|---|---|---|
| 1.5 | 2 | 0.25 | 0.05 | 1.96 | 2 | 1 |
| 2 | 3 | 0.4 | 0.07 | 2.96 | 2.5 | 1.5 |
| 2.5 | 5 | 0.63 | 0.07 | 4.925 | 3 | 2 |
| 3 | 8 | 0.8 | 0.08 |
| 7.91 |
| 4 |
| 3 |
| 4 | 12 | 0.8 | 0.1 | 11.89 | 5 | 4 |
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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