Used on 5865-01-535-8887 detecting system, countermeasures. right-hand 20 thread quantity per inch altered item, modified castle nut, .1/4-20. made from part number 91855A350, mcmaster carr
Used on palletized loading system (pls) fov,container roll-in/out platform (crop) model m3. right-hand 6 thread quantity per inch grade 5 zinc surface treated