SHAFT COLLAR, SYSTEM OF MEASUREMENT INCH, BORE TYPE ROUND, BORE DIAMETER 1 5/8 IN, BORE THREAD SIZE NOT APPLICABLE, COLLAR OUTSIDE DIAMETER 2 5/8 IN, INSIDE HEIGHT TO FLAT NOT APPLICABLE, CLEARANCE DIAMETER 2.67 IN, COLLAR WIDTH 11/16 IN, COLLAR MATERIAL CARBON STEEL, KEYWAY WIDTH NOT APPLICABLE, COLLAR MATERIAL GRADE 1045, KEYWAY DEPTH NOT APPLICABLE, THREAD DIRECTION NOT APPLICABLE, CENTER TO LEVER TOP NOT APPLICABLE, COLLAR CONSTRUCTION 1-PIEC