Used on himars, rsv, mk36, 2320-01-504-5218. extender nha is special tools kit, p/n 5SK140; center hex wrenching facility is 0.937" across the flats threaded external rigid, threaded internal swivel
Used on process panel. union bulkhead black, stainless grap ring; nitrile o'ring; lock nuts up to .5 inch bulkhead thickness swivel, wrenching facilities each end