2a thread class right-hand 2.000" thread length hexagon head style 9.000" grip length 18 thread quantity per inch zinc or cadmium surface treated unf thread series
2a thread class right-hand 1.250" thread length hexagon head style 16 thread quantity per inch passivate surface treated counterbore unthreaded unf thread series
right-hand 5.50" thread length hexagon head style 13 thread quantity per inch standard hex head bolt standard hex head bolt, grade 5, 1/2-13 threads, 5 1/2" long