| GENERAL CHARACTERISTICS ITEM DESCRIPTION | STEEL,MIL-S-6758 COMP 4130 COND C,CADMIUM-PLATED QQ-P-416 O/A EXCEPT THREADS,DIM.,4.483 IN. NOM O/A LG,2.124 IN. NOM CENTER W,0.881 IN. NOM LEFT AND RIGHT ARM LG,1.250 IN. NOM ARM THICKNESS,1.250-18 NEF CLASS 3A EXTERNAL THREADS ON ARMS BY 0.412 IN. LG,1.6249 IN. MIN,1.6259 IN. MAX TRUNNION CENTER ID,ONE INNER RING NO. M1-15 AND ONE BEARING NO. GR-18RSS MCGILL MFR CO INSTALLED IN TRUNNION CENTER,ONE LUB FITTING INSTALLED ON TRUNNION OD,ONE KEYWAY THRU THREADS ON RIGHT ARM,0.187 IN. W,0.144 IN. DEEP,0.437 IN. LG MADE BY 0.500 IN. DIA CUTTER,TRUNNION USED ON MAIN ROTOR,ROTATING STAR ASSEMBLY |