2a thread class right-hand 1.137" thread length flat countersunk head style 56 thread quantity per inch passivate screw surface treated unc thread series
3a thread class right-hand 0.528" thread length dished hexagon head style 1.375" grip length 20 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.528" thread length dished hexagon head style 1.062" grip length 20 thread quantity per inch cadmium surface treated unjf thread series
2a thread class right-hand 0.420" thread length flat countersunk head style 20 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 1.594" thread length knurled no. 1 head style 20 thread quantity per inch with nylon 40 deg swivel foot oxide surface treated unc thread series
3a thread class right-hand 0.350" thread length flat chamfer head style 32 thread quantity per inch has hexagon socket internal drive style located in head unc thread series