| GENERAL CHARACTERISTICS ITEM DESCRIPTION | STEEL AISI 4140,O/A DIM. 20.000 IN. OD BY 12.375 IN. ID BY 5.188 IN. LG,70 INTERNAL INVOLUTE FLAT ROOT SIDE FIT SPLINES REDUCED TO 66 SPLINES BY REMOVING TEETH NO. 1,18,36 AND 53,17.500 IN. PITCH DIA,TWELVE 0.500-13UNC-2B BY 0.875 IN. DP TAPPED HOLES EQUALLY SPACED ON 19.000 IN. DIA BO CIRCLE |