Shaft Collar, System of Measurement Inch, Shaft Locking Type - Couplings 2 Piece Clamp, Bore Type - Collars Plain Bore, Bore Dia. 2 1/2 in, Material - Collars Stainless Steel, Outside Dia. 3 3/4 in, Width 7/8 in, Clearance Dia. 4.062 in, Screw Size 3/8 In. -24, Screw Material Stainless Steel, Operating Temp. Range -40 Degrees to 800 Degrees F. This item has been restricted from sale in the following state (s): []