Answer Bob, The 710-1044 Hex Head Screw is a "standard" SAE thread clockwise to tighten and counterclockwise to loosen. (righty tighty / lefty loosey). Just remember, there is a nut and washer on the top side on the blade adapter plate. You may need an open end wrench to hold the nut. Read More... Answered by AppliancePartsPros.com | Friday, June 7, 2019