2a thread class right-hand 1.531" thread length hexagon head style 10 thread quantity per inch altered from MS35307-488, nsn 5305012736459 passivate surface treated unc thread series
2a thread class right-hand 0.752" thread length hexagon head style 18 thread quantity per inch alter from MS35307-335 nsn 5306007208260 passivate fastener surface treated unc thread series
2a thread class right-hand 0.469" thread length flat countersunk undercut head style 32 thread quantity per inch cadmium screw surface treated unc thread series