Climax Metal LC-062 Steel Set Screw Collar, Lightweight Zinc Plating, 5/8" Bore Size, 1" OD, With 1/4-20 x 3/16 Set Screw Setscrew shaft collar for applications supporting low axial loads and simple positioning Lightweight design for limited-space applications Steel for weldability and rust resistance with zinc plating for better resistance to corrosion than black oxide steel Includes a socket setscrew for securing the collar onto the shaft Operating temperatures range from -17 to 121 degrees C (0 to 250 degrees F)