3a thread class right-hand 0.528" thread length dished hexagon head style 1.615" grip length 20 thread quantity per inch cadmium surface treated unjf thread series
2a thread class right-hand 0.880" thread length headless (setscrew) head style 16 thread quantity per inch flat point with 3.750 in. dia. hole x 0.312 in. deep unf thread series
2a thread class right-hand 0.330" thread length knurled no. 1 head style 32 thread quantity per inch threads undercut for relief: 0.050 in. wide x 0.087 in. min. dia., 0.090 in. max. dia. unc thread series
2a thread class right-hand 0.420" thread length knurled no. 1 head style 28 thread quantity per inch threads undercut for relief: 0.193 in. dia. porm 0.002 in. x 0.080 in. wide unf thread series
3a thread class right-hand 0.363" thread length flat countersunk head style 0.115" grip length 32 thread quantity per inch cadmium surface treated unjf thread series
3a thread class right-hand 0.403" thread length flat countersunk head style 1.365" grip length 28 thread quantity per inch cadmium surface treated unjf thread series