3a thread class right-hand 0.378" thread length pan no. 2 head style 0.552" grip length 28 thread quantity per inch internal drive ribbed unjf thread series
2a thread class right-hand 0.450" thread length knurled no. 4 head style 28 thread quantity per inch undercut in shank 0.029 in. min 0.032 in. max length, dia 0.210 in. min 0.212 in. max unf thread series
2a thread class right-hand 0.261" thread length flat countersunk head style 56 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 1.183" thread length flat countersunk head style 40 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 0.683" thread length flat countersunk head style 40 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 0.121" thread length flat countersunk head style 40 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 0.139" thread length flat countersunk head style 40 thread quantity per inch passivate screw surface treated unc thread series
2a thread class right-hand 0.076" thread length flat countersunk head style 40 thread quantity per inch passivate screw surface treated unc thread series