Standard: ZQ 4179 - 2006
Available sizes: G1/2A to G3/8A (5 sizes)
| Size | P | k_max | s_max | s_min | k_nominal |
|---|---|---|---|---|---|
| G1/2A | 20 | 0.214 | 24 | 27.4 | 11.5 |
| G1/4A | 10 | 0.019 | 10 | 11.4 | 5 |
| G1/8A | 10 | 0.007 | 7 | 8 | 5 |
| G3/4A | 22 | 0.35 | 32 | 36.6 | 13 |
| G3/8A |
| 12 |
| 0.058 |
| 17 |
| 19.4 |
| 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.
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