Standard: ZQ 4322 - 2006
Available sizes: M27 to M39 (5 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|
| M27 | 2 | 12.1 | 23 | 39 | 22 | 9.4 | 19 | 10 |
| M30 | 3 | 15.7 | 27 | 46 | 26 | 14 | 23 | 10 |
| M33 | 3 | 18.8 | 31 | 54 | 30 | 16.7 | 26 | 10 |
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.
| M36 |
| 3 |
| 20.3 |
| 36 |
| 62 |
| 35 |
| 18.6 |
| 30 |
| 10 |
| M39 | 3 | 23.5 | 40 | 67 | 39 | 21.3 | 33 | 10 |
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