"MATERIAL-1.880 DIA X 1.630 L ALY STEEL,4140-COND C-4 PER MIL-S-5626;HOLE IN CENTER .259-.266 DIA,CSK 100 DEG X .500 DIA;SECOND HOLE OFFSET FROM CENTER .560 IN,.189-.191 DIA,COORDINATED WITH 27-370-4984;NHA-27-370-4983,USED ON 27-370;FINISHED DIA-1.748-1.750"