Used on lav-c2a2;2355-01-539-3589. 2a thread class right-hand 1.000" thread length button head style 28 thread quantity per inch black-oxide alloy steel button socket head cap screw oxide surface treated unc thread series
2a thread class right-hand 0.156" thread length flat chamfer head style 32 thread quantity per inch screw shoulder socket head hexagon corrosion resistant steel passivate surface treated unc thread series