Standard: CNS 4562 - 1981
Available sizes: (2) to 4.5 (6 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (2) | 2.5 | 1.15 | 0.85 | 1.7 | 4 | 5 | 5.375 | 1 | 2.3 | 4.625 | 2 |
| 2.5 | 3.5 | 1.72 | 1.22 | 2.4 | 5.6 | 7 | 7.45 | 2 |
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.
| 3.7 |
| 6.55 |
| 2.8 |
| 3 | 4.5 | 2.38 | 1.88 | 3.1 | 7.2 | 9 | 9.45 | 2 | 4.4 | 8.55 | 3.6 |
| 3.5 | 5.5 | 2.92 | 2.42 | 3.8 | 8.8 | 11 | 11.55 | 3 | 6.2 | 10.45 | 4.4 |
| 4 | 7 | 4.02 | 3.52 | 4.9 | 11.2 | 14 | 14.55 | 3 | 7.3 | 13.45 | 5.6 |
| 4.5 | 8 | 4.43 | 3.93 | 5.6 | 12.8 | 16 | 16.55 | 4 | 8.8 | 15.45 | 6.4 |
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