3a thread class right-hand 0.186" thread length hexagon head style 0.046" hole diameter 32 thread quantity per inch passivate screw surface treated unjf thread series
3a thread class right-hand 1.563" thread length pan no. 2 head style 16 thread quantity per inch altered item. make from MS16997-102 with coating of xlan p-92 primer phosphate zinc surface treated unc thread series