Standard: CNS 158 - 1994
Available sizes: (5.3) to 7.4 (7 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| (5.3) | 8.2 | M7 | 12 | 15.5 | 0.5 | 7.8 | 16 | 0.4 | 10 | 16.5 | 0.6 |
| (6.4) | 13.3 | M11 | 22 | 27.5 | 1 | 12.7 | 28 |
| 0.9 |
| 18 |
| 28.5 |
| 1.1 |
| 3.6 | 4.35 | M3.5 | 8 | 9.5 | 0.32 | 4.05 | 10 | 0.22 | 5 | 10.5 | 0.42 |
| 4.2 | 5.45 | M4.5 | 10 | 11.5 | 0.32 | 5.15 | 12 | 0.22 | 6 | 12.5 | 0.42 |
| 4.8 | 6.6 | M5.5 | 10 | 11.5 | 0.38 | 6.2 | 12 | 0.28 | 8 | 12.5 | 0.48 |
| 5.8 | 10.7 | M9 | 20 | 24.5 | 0.5 | 10.3 | 25 | 0.4 | 16 | 25.5 | 0.6 |
| 7.4 | 16.3 | M14 | 25 | 31.2 | 1 | 15.7 | 32 | 0.8 | 20 | 32.8 | 1.2 |
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.
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