Climax Metal H1C-037-A Shaft Collar, One Piece, Clamp Style, Aluminum, 3/8" Bore, 1 1/16" OD, 5/16" Width One-piece clamping shaft collar for applications requiring a more uniform holding power and higher axial load capacity than setscrew collars Effective on both hard and soft shafts Aluminum for resisting corrosion and tarnishing Includes socket-head cap screws for securing the collar onto the shaft Operating temperatures range from -40 to 104 degrees C (-40 to 220 degrees F)