Standard: ZQ 4364 - 2006
Available sizes: M16 to M30 (4 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|
| M16 | 2.5 | 100 | 200 | 20 | 60 | 80 | 15 |
| M20 | 3.5 | 130 | 300 | 30 | 90 | 120 | 25 |
| M24 | 4.5 | 160 | 400 | 42 | 120 | 170 | 35 |
| M30 | 5.5 | 180 | 500 |
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.
| 56 |
| 160 |
| 220 |
| 45 |
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