Precision Lock Nuts are employed to preload, regulate and secure gears, bearings and many other power transmission produces to shafts as well as spindles with an increased degree of stiffness. These nuts have machined internal threads as well as sturdy faces that render strong metal-to-metal locking without bend or distortion Precision Lock Nuts are occasionally referred as bearing locknuts as the dimensions of these products are made to relate with standard bearing sizes.