Standard: ZQ 4325 - 2006
Available sizes: M56 to M80 (4 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|
| M56 | 6 | 30 | 41 | 160 | 80 | M16 | 15 |
| M64 | 6 | 33 | 46 | 190 | 100 | M20 | 15 |
| M72 | 6 | 33 | 46 | 230 | 125 | M20 | 15 |
| M80 | 6 | 33 | 46 |
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.
| 270 |
| 150 |
| M20 |
| 15 |
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