2b thread class right-hand 11 thread quantity per inch item must comply with requirements of defense supply center philadelphia production standard no. PO0153nrp cadmium surface treated
Used on gas,generator,turbine ft4a-2 and engine,gas turbine ft4a-6 onboard 378 ft whec coast guard vessels. 3b thread class right-hand 18 thread quantity per inch nut has 2 places 180 degrees apart for lock-wire drilled .370 in. away from center of nut across points of nut in a diameter of .060 in.