Standard: GB /T 25618.1 - 2010
Available sizes: 1 to 3 (3 sizes)
| Size | P | e | r | k_max | k_min | s_max | s_min | ds_max | ds_min | k_nominal | ds_nominal |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 带锥螺纹的直通油杯 | 5.4 | 4.6 | / | 10 | R1/8 ① | 11 | 5.4 | 6.55 | / | 8 |
| 2 | 65°~67.5°弯头油杯 | 5.4 | 4.6 | 8.5 | 10 | R1/8 ① | / |
| 5.4 |
| 6.55 |
| 12.5 |
| 8 |
| 3 | 90°弯头油杯 | 5.4 | 4.6 | 8.5 | 10 | R1/8 ① | / | 5.4 | 6.55 | 12.5 | 8 |
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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