"DCENTRALLY LOCATED HOLE 2.73O IN. NOM DIAM;FOUR TABS,THREE EQUALLY SPACED W/FOURTH OFFSET AT 80 DEG ON A DIAM OF 4.560 IN. NOM W/A WIDTH OF 0.680 IN. NOM;RAISED SURF I.E. KEYS,LOCATED 180 DEG APART"
MATT
MATERIAL
STEEL COMP 4340 OVERALL
SFTT
SURFACE TREATMENT
OXIDE OVERALL
STDC
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
MIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL