Used on hull, suspension for armored assult vehicle, full tracked, m551 and m551a1; 2320-01-097-0260 hemtt (heavy expanded mobility tactical truck). 18 2nd end thread quantity per inch second end 0.344 in. id couterbore to 0.421 in. depth w/reduction of passage to 0.281 in. id ptf-sae short 1st end thread series
Used on aircraft fluid systems. 3a external thread class right-hand external 0.594" overall length anodize surface treated plug, tube fitting flareless (note: drilled hole is optional should not be considered as a separating characteristic unjf external thread series
3a 2nd end thread class 12 1st end thread quantity per inch 1st end bulkhead thread size 1.062 in. nom, qty per in. 12, class 3a, un anodize surface treated un 1st end thread series
