Used on general purpose electronic test equipment gpete. 2a thread class right-hand 27.0mm overall length 32 thread quantity per inch unef thread series
Used on armored reconnaissance- m2a3 nsn 2350-01-436-0005. modified major diameter: 31.95 - 31.80, panel thickness 3.2 - 1.58, alternate o-ring material may be ams 3325, c