0.250" single connection inside diameter 4.500" overall length 2.375" overall width w/adjustable deadband from 0.10 to 0.80 psig rectangular nptf single pressure connection thread series
2b single mounting facility thread class 4.120" overall length 1.750" overall width 32 single mounting facility thread quantity per inch coil marked, press to talk k 802 unc single mounting facility thread series
2a thread class right-hand 1.542" overall length 1.605" overall width 18 thread quantity per inch critical spare parts for T56 aircraft engine listed on T56 engine critical parts list unef thread series