SAE AS8879D-2004
螺纹.增加内径的尺寸可控的圆角半径的UNJ型材
Screw Threads - UNJ Profile, Inch Controlled Radius Root with Increased Minor Diameter [Superseded: OASD MIL-S-8879 C CANC NOTICE 3, OASD MIL-S-8879 C NOTICE 2, OASD MIL-S-8879 C NOTICE 1, OASD MIL-S-8879 C (1), OASD MIL-S-8879 C, OASD MIL-S-008879