3M Disc Retainer Nut, Disc Retainer Nut Item, For use with all 3M disc pad hub and face plates, non 3M fibre disc holders, For Use With: Fibre Discs, 4-1/2" and 5" dia., 5/16" Length, Thread Size: 5/8-11 Internal
- Mechanical attachment
- Disc retainer nut features 1/4" diameter holes for use with a spanner wrench
- Nuts have 5/8-11 threaded arbor hole in three depths to accommodate grinder shaft lengths
- Use retainer nuts for discs with center holes