Used to fasten bearings in machines and equipments that require extreme precision, such as: lathes, grinders and milling machines.For locking the shaft, these nuts have three angularly distributed bolts, which are pressed together against the shaft by screws. The bolts have slope equal to the angle of the thread, causing that the nut be not subjected to axial loads, allowing the locking of the nut into the exact grip position.Material: Carbon steel with phosphate finish. Specifications: Brand BGL MPN KMT 18 ID - Inner Diameter M90 x 2mm OD - Outer Diameter 115mm Width 32mm Weight (kg) 1.265