Standard: CNS 4320 - 1987
Available sizes: M10 to M8 (7 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|
| M10 | 1.5 | 53 | 9 | / | 34 | 40 | 22 |
| M12 | 2 | 61 | 12 | 1.5 | 42 | 46 | 27 |
| M14 | 2 | 69 | 14 | 1.5 | 50 | 56 | 32 |
| M16 |
| 2 |
| 79 |
| 17 |
| / |
| 60 |
| 66 |
| 41 |
| M18 | 2 | 91 | 21 | / | 72 | 78 | 50 |
| M20 | 3 | 103 | 25 | / | 84 | 90 | 60 |
| M8 | 1.25 | 45 | 7 | 1 | 26 | 32 | 17 |
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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