2a thread class right-hand 0.119" thread length flat chamfer head style 56 thread quantity per inch undercut shank under head, undercut to root dia by 0.031 in. w passivate surface treated unf thread series
2a thread class right-hand 1.344" thread length flat chamfer head style 32 thread quantity per inch w/nonstandard point 0.120 dia 0.375 lg unc thread series
3a thread class right-hand 0.312" thread length knurled no. 4 head style 16 thread quantity per inch w/cone point 45.0 deg by 0.187 in lg passivate surface treated unc thread series
2a thread class right-hand 0.875" thread length hexagon head style 32 thread quantity per inch cadmium or enamel screw surface treated unf thread series