| GENERAL CHARACTERISTICS ITEM DESCRIPTION | STEEL; SAE 1020; 3.380 IN. LG; 3.203 IN. OD; 2.002 IN. ID; KEYWAY ON ID; 0.378 IN. W; 0.178 IN. DEPTH; KEYWAY RUNS ENTIRE LENGTH OF HUBS; TWO 5/16-24 UNF 3B THD HOLES DRILLED LENGTHWISE IN HUB END,HOLES SPACED 180 DEG APART; 0.620 IN. THD LG; 0.060 IN. BY 45 DEG CHAMFER ON @ID BOTH ENDS; 0.060 IN. BY 15 DEG CHAMFER ON OD OF THD HOLE END,AND 0.160 BY 45 DEG CHAMFER ON OTHER OD |