NTN SNR: MB8 Lock Washe Tab washers are used for securing KM series lock nuts. They have an inner tab for location on the adaptor sleeve. One of the external tabs is bent over a slot when used wit the KM series lock nuts. MPN: MB8 EAN: 3413520530204 MB8 Lock Washe Attributes: For Use With: Tab Washers are Used for Securing KM Series Lock Nuts. They Have An Inner Tab for Location on the Adaptor Sleeve. One of the External Tabs is Bent Over a Slot When Used with the KM Inside Diameter: 40mm MFR Part No.: MB8 Outside Diameter: 62mm Thickness: 1.25mm