2a thread class right-hand 1.131" thread length fillister head style 0.046" hole diameter 32 thread quantity per inch passivate screw surface treated unc thread series
3a thread class right-hand 0.788" thread length bevel-conical head style 20 thread quantity per inch 6 drilled holes in head cadmium surface treated unf thread series
3a thread class right-hand 1.500" thread length 18 thread quantity per inch one liner 3/16 in. thk 1-1/2 in. w, 2-15/32 in. h welded in radius of bolt round bend unf thread series