Standard: CNS 4771 - 1979
Available sizes: M10 to M8 (5 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M10 | (20) | 24 | 11.65 | 32 | 32.5 | 20 | 19.7 | 12 | 12.35 | 19.4 | 31.5 |
| M4 | 6 | 8 | 3.76 | 10 | 10.29 | 6 | 5.7 | 4 | 4.24 | 5.5 | 9.71 |
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.
| M5 |
| 10 |
| 12 |
| 5.71 |
| 15 |
| 15.35 |
| 10 |
| 9.7 |
| 6 |
| 6.29 |
| 9.5 |
| 14.65 |
| M6 | 14 | 16 | 7.71 | 22 | 22.42 | 14 | 13.7 | 8 | 8.29 | 13.4 | 21.58 |
| M8 | 18 | 20 | 9.71 | 28 | 28.42 | 18 | 17.7 | 10 | 10.29 | 17.4 | 27.58 |
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