C/omatl: steel, tool qq-t-570 classl-6 or alt class a-2; surface shall bephosphatized in accordance with 5.3.1.3 or 5.3.2.3 or mil-std-171; finish 32 microinches all over; rh a80-83; outside diameter 0.874 in; inside diameter 0.626in; height 0.505 in