Acme Threaded Shaft Collar, System of Measurement Inch, Bore Type Threaded, Bore Diameter 1 in, Bore Thread Size 1 In.-10, Collar Outside Diameter 1 3/4 in, Inside Height to Flat Not Applicable, Clearance Diameter 2.03 in, Collar Width 1/2 in, Collar Material Stainless Steel, Keyway Width Not Applicable, Collar Material Grade 303, Keyway Depth Not Applicable, Thread Direction ACME Thread, Center to Lever Top Not Applicable, Collar Construction 1-Piece, Screw Material Stainless Steel