flat thread meaning in English
方螺纹
平螺纹
Examples
- Hexagon bolts for high - strength structural bolting with large width across flats thread lengths according to gb t 3106 - product grade c - property classes 8 . 8 and 10 . 9
栓接结构用大六角头螺栓螺纹长度按gb t 3106 c级8 . 8和10 . 9级