Standard: GB /T 14034.4 - 2023
Available sizes: G 1/2 to G 5/8 (5 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| G 1/2 | 32 | 16.5 | 27.35 | 36.6 | 36.7 | 48.5 | 48.8 | 27.6 | 27.85 | 48.2 | 36.5 |
| G 1/4 | 12 | 12.9 | 19.85 | 16.2 | 16.3 | 26 | 26.3 |
| 20.1 |
| 20.35 |
| 25.7 |
| 16.1 |
| G 1/8 | 8 | 9.2 | 14.75 | 9.5 | 9.6 | 18 | 18.3 | 15 | 15.25 | 17.7 | 9.4 |
| G 3/8 | 20 | 14.2 | 22.35 | 21.8 | 21.9 | 31 | 31.3 | 22.6 | 22.85 | 30.7 | 21.7 |
| G 5/8 | 50 | 21.3 | 37.25 | 54.1 | 54.2 | 68.5 | 68.8 | 37.5 | 37.75 | 68.2 | 54 |
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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