Standard: QJ 42 - 1987
Available sizes: M10 to M8 (4 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|
| M10 | 36 | 30 | 45 | 35.61 | 42 | 34 | 24 | 41.6 |
| M5 | 10 | 8 | 13 | 9.78 | 13 | 9.2 | 7 | 11.5 |
| M6 | 17 | 14 | 21 | 16.73 | 20 | 16 | 10 | 19.6 |
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.
| M8 |
| 24 |
| 22 |
| 30 |
| 23.67 |
| 30 |
| 23 |
| 17 |
| 27.7 |
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