3b thread class right-hand flat countersunk head style 28 thread quantity per inch threads coated with rust inhibitor ferrocote 364, fscm 77490 per mil-c-16173, gr 3 cadmium surface treated
3b thread class right-hand flat countersunk head style 28 thread quantity per inch threads treated with rust inhibitor ferrocote 364, fscm 77490 per mil-c-16173, gr 3 cadmium surface treated