3a all ends thread class 12 first quick disconnect end thread quantity per inch o/a od 2.410 in. passivate body surface treated male coupling half unjf all ends thread series
Used on TF-34. block fuel distibutor matl ams 5580 or ams 5665; 2.210 in w, 1.330 in deep, 4.720 in lg; 3 mounting holes .260 to .265 in dia, 1 hole csk threaded 0.25 to 0.27 in dia, 10 nipples
Used on hemtt family (heavy expanded mobility tactical trucks). 2a 1st end thread class 18 1st end thread quantity per inch weapon system essential nptf 2nd end thread series