Standard: ZQ 4451 - 2006
Available sizes: G1/2A to G3/8A (6 sizes)
| Size | P | k_max | k_min | s_max | s_min | ds_max | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|
| G1/2A | 55 | 32.95 | 30 | 5 | 16 | 375 | 33 | 29.67 |
| G1/4A | 26 | 20.88 | 19 | 4 | 14 | 67 | 26 | 18.67 |
| G1/8A | 18 | 14.2 | 13 | 3 |
| 12 |
| 24 |
| 21 |
| 12.73 |
| G1A | 100 | 47.3 | 41 | 6 | 26 | 1200 | 46 | 40.61 |
| G3/4A | 85 | 39.55 | 36 | 5 | 20 | 1020 | 40 | 35.61 |
| G3/8A | 39 | 29.56 | 27 | 5 | 16 | 195 | 32 | 26.67 |
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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