2a single mounting facility thread class 0.250" single mounting facility thread length 2.250" overall length 0.937" overall width circular wafer, bushing mount unef single mounting facility thread series
2a single mounting facility thread class 0.375" single mounting facility thread length 2.718" overall length 0.937" overall width circular wafer, bushing mount unef single mounting facility thread series
2a single mounting facility thread class 0.375" single mounting facility thread length 2.715" overall length 1.370" overall width circular wafer, bushing mount unef single mounting facility thread series
Used on mh-53e, hh-53h & uh-1 helicopter; c-141 & f-111 aircraft. 1.270" overall length 32 thread quantity per inch weapon system essential uns thread series