bowber wrote: ↑Mon Feb 01, 2021 7:14 pm You'd think so wouldn't you but the flanged nut spreads the load much better and doesn't distort like a washer does, the proof is in the pudding and I see far less damage from a flanged nut than a washer on regularly removed nuts. A classic is the rear wheel nut on an Aluminium swinging arm, I bought a new oem flanged nut for my KTM, my mate fitted a nut and washer, it wasn't long before his swinging arm looked a mess with the edges of the slot starting to burr over etc, an extreme example as if he'd used a new washer each time there wouldn't have been as much damage but my swinging arm still looked fresh and flat with no marks.
Steve
mmm ... thanks for that .. very counter-intuitive ... I will give preference and precedence to flanged nuts from now on