NEW 8 diameter replacement screw for a rubber extruder machine 15966

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  For sale is a 
  Overall length is 78"
  Diam: ID on the one of ends 2-1/4" and OD=5-1/4" (pic. 4);
  Pic 3: from right to left side (diameter): 5-1/4"; 5-3/4"; 7-15/16".
  Key pass is 16 x 1.5 x 5/8"
  Shaft of drill's part is 4-3/4" dia; drill is 8" dia.