标 准 编 号:SAE AS 8879D-2004 简体中文标题:螺纹-UNJ牙形,牙底圆弧半径加大并受控的米制螺纹繁体中文标题:螺纹-UNJ牙形,牙底圆弧半径加大并受控的米制螺纹English Name:Screw Threads - UNJ Profile, Inch Controlled Radius Root with Increased Minor Diameter