NTN SNR: KM8 Lock Nut Used primarily to help lock and locate bearings on shafts or adaptor sleeves. They have evenly spaced slots on the circumference for use with the SNR range of hook spanners. MPN: KM8 EAN: 3413520529659 KM8 Lock Nut Attributes: Appropriate Locking Washer: MB8 Inside Diameter: 40mm MFR Part No.: KM8 Thread Size: M40 x 1.5 Width: 9mm