3b thread class right-hand 10 thread quantity per inch per navy drawing p/n is made from MS17828-12c but is modified. one modification is an anti-galling compound per a-a-59004 is applied.material given on drawing is nickel copper (nicu) .
Used on interim armored vehicle (iav), contractor logistics support (cls); rg-33 auv mrap. 3b thread class right-hand 40 thread quantity per inch phosphate zinc nut surface treated
Used on interim armored vehicle (iav), contractor logistics support (cls); mrap - cougar. 3b thread class right-hand 16 thread quantity per inch zinc nut surface treated