Standard: QC /T 599
Available sizes: M4 to M6 (3 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| M4 | 0.8 | 0.9 | 1.25 | 9.5 | 2.6 | 12.5 | 12.23 | 2.5 | 2.25 | 9.75 | 2.4 |
| M5 | 1.25 | 1.1 | 1.45 | 14 | 3.1 | 19 | 18.67 | 3.5 |
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.
| 3.25 |
| 14.25 |
| 2.9 |
| M6 | 1.75 | 1.3 | 1.65 | 18.5 | 3.6 | 24 | 23.67 | 5 | 4.75 | 18.75 | 3.4 |
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