Standard: CNS 5405 - 1980
Available sizes: M4 to M8 (4 sizes)
| Size | P | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|
| M4 | 2 | 2.21 | 6.3 | 8 | 10 | 9.5 | 4 | 2.04 | 6.5 | 7.9 |
| M5 | 2.3 | 6.02 | 9.3 | 11.75 | 15 | 14 | 6 | 5.55 | 9.5 |
| 11.65 |
| M6 | 3.5 | 36.4 | 15.7 | 20 | 28 | 24 | 11.5 | 33.6 | 16 | 19.85 |
| M8 | 5 | 108 | 23.7 | 30 | 42 | 36 | 17 | 100 | 24 | 29.85 |
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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