The Machinery Mounting Solutions Spherical Spacer accomplishes two functions: 1) it creates fastener planes and 2) bolt elongation. The RotaChock® by design is capable of taking the clamping force created by the hardware at any length. We offer the spacer to suit your application while creating a fastener that is in pure tension and no longer a maintenance problem for the life cycle of the machine. The illustration below and the table depicts our part number and diameters offered Off-The-Shelf. The angular offset maximum angle is 4 degrees.