Used on nuclear power plants. 2a thread class right-hand 1.390" overall length 0.510" overall width 40 thread quantity per inch interface gasket included. jackscrews have knurled, slotted heads. nickel surface treated rectangular w/jackscrew unc thread series
2a thread class right-hand 18 thread quantity per inch wire rope coated with nylon jacket cadmium surface treated external threads w/chain or rope unef thread series
2b thread class right-hand 2.000" overall length 18 thread quantity per inch wire rope has a nylon jacket. cadmium surface treated extended barrel w/internal threads unef thread series