Used on tank m48a5. 2a thread class right-hand 1.170" thread length hexagon head style 12 thread quantity per inch cadmium fastener surface treated unf thread series
2a thread class right-hand 1.750" thread length hexagon head style 4.000" grip length 10 thread quantity per inch oxide surface treated unc thread series
3a thread class right-hand 0.939" grip length mechanical lock feature on threads, hole through threaded portion of shank with dia of 0.076 in. min nickel surface treated unjf thread series
3a thread class right-hand 1.187" thread length hexagon head style 0.188" grip length 20 thread quantity per inch oxide surface treated unf thread series
2a thread class right-hand 1.000" thread length hexagon head style 2.750" grip length 18 thread quantity per inch oxide surface treated unc thread series