MADE OF CAST IRON GRADE 120-95 OVERALL;QUENCHED AND TEMPERED IN ACCORDANCE WITH SPEC QQ-S-681;O.D. 17.250 IN. NOM.;OVERALL LG. 3.250 IN. NOM.; FACE WIDTH 1.750 IN. NOM.;RIM TYPE SOLID;BORE FEATURES INCLUDED;BORE TYPE STRAIGHT;BORE DIA. 5.255 IN. NOM.; BORE LG. 0.625 IN.;8 SECURING HOLES EVENLY SPACED ON 6.375 IN. BOLT CIRCLE DIA.;DRILLED HOLE DIA.0654 IN. MIN.;0.695 IN. NOM.