Shaft Collar, System of Measurement Inch, Shaft Locking Type - Couplings 1 Piece Clamp, Bore Type - Collars Plain Bore, Bore Dia. 2 3/8 in, Material - Collars Black Oxide Steel, Outside Dia. 3 1/2 in, Width 3/4 in, Clearance Dia. 3.75 in, Screw Size 5/16 In. -24, Screw Material Steel, Operating Temp. Range 0 Degrees to 300 Degrees F. This item has been restricted from sale in the following state (s): []