Standard: QC /T 387 - 1999
Available sizes: 10 to 8 (7 sizes)
| Size | P | k_max | k_min | s_max | s_min | k_nominal |
|---|---|---|---|---|---|---|
| 10 | 15.89 | 16 | 16.11 | 1.5 | 20 | 2.0 |
| 12 | 19.87 | 20 | 20.13 | 1.5 | 25 | 2.0 |
| 14 | 23.87 | 24 | 24.13 | 2.0 | 30 | 3.0 |
| 16 | 27.87 | 28 | 28.13 | 2.0 | 35 | 3.0 |
| 18 |
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.
| 31.84 |
| 32 |
| 32.16 |
| 2.0 |
| 45 |
| 3.0 |
| 6 | 7.91 | 8 | 8.09 | 1.5 | 7 | 2.0 |
| 8 | 11.89 | 12 | 12.11 | 1.5 | 13 | 2.0 |
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