Standard: CNS 4556 - 1981
Available sizes: M10 to M8 (7 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M10 | 2.5 | 14 | 2 | 33 | 24.4 | 50 | 56 | 12 | 0.8 | 69 | 16.3 |
| M12 | 3 | 17 | 2 | 36 | 26.4 | 54 | 60 |
| 13 |
| 0.8 |
| 73 |
| 19.8 |
| M3 | 0.7 | 2.5 | 0.4 | 7 | 4.7 | 14 | / | 2.8 | 0.2 | / | 2.9 |
| M4 | 1 | 4 | 0.5 | 10 | 6.8 | 18 | / | 4 | 0.25 | / | 4.7 |
| M5 | 1.5 | 7 | 1 | 16 | 11.2 | 26 | 32 | 6 | 0.4 | / | 8.1 |
| M6 | 2 | 10 | 2 | 21 | 16.2 | 34 | 40 | 8 | 0.6 | / | 11.7 |
| M8 | 2.5 | 12 | 2 | 27 | 20.2 | 42 | 48 | 10 | 0.6 | 61 | 14 |
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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