Standard: QC /T 337 - 1999
Available sizes: 10 to 8 (4 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 10 | 16 | 8 | 27 | 36 | 35.38 | 16.27 | 16.5 | 40 | 30 | 16.93 | 75 |
| 5 | 6 | 4 | 10 | 15 | 14.57 | 6.18 | 6.5 | 15 | 12 | 6.86 | 40 |
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.
| 6 |
| 10 |
| 5 |
| 16 |
| 24 |
| 23.48 |
| 10.22 |
| 10.5 |
| 25 |
| 18 |
| 10.93 |
| 55 |
| 8 | 14 | 7 | 24 | 32 | 31.38 | 14.27 | 14.5 | 35 | 26 | 14.93 | 70 |
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