Constructed using high strength hardened stainless steel or glass impregnated polyamide flexures, the couplings require no maintenance, providing years of trouble-free life, even in contaminated environments. Directionally independent, they can provide the same torsional rigidity and offset capability regardless of the rotation direction. The use of F-Flex couplings in mechanical systems to connect rotating shafts will result in lower energy usage and bearing failure, since less stress is placed upon bearings. Misalignment forces on the bearings of a rotating system generates heat which is wasted energy. The use of F-Flex couplings will minimize these misalignment forces and result in a more energy efficient system. F-Flex couplings will provide superior technology at the lowest cost. Selection of the correct coupling for your application should result in exceptional long life, even in the most arduous environment. F-Flex couplings are normally provided with two set screws aligned at 90 degrees to each other for clamping to the shaft, however, they may be provided with F-Flex patent pending progressive clamp bushings, which will allow for secure mark free clamping of the coupling to a shaft. A collet style shaft locking design is presently under development for the lattice servo coupling and will be available soon.