Original DeWalt ring nut — part number 942901-00. This genuine DeWalt lock/ring nut secures the clamp and collet assembly on compatible DeWalt routers, replacing the factory nut found next to the clamp, collet and collet nut in the parts diagram.

Example compatible models include DeWalt DW625 (Type 2), DW624 (Type 1), DW625E and DW629 (various types) and MOF Models : MOF131 / MOF177 (E)

Built from durable metal for reliable clamping performance and to resist wear from repeated collet tightening, this original DeWalt part installs in the same position as the factory nut and works together with the collet (item 59) and collet nut (item 60) shown on the parts breakdown. DeWalt spare parts like this one are what you want when you need a direct-fit replacement.

If your router’s clamp/collet assembly won’t hold bits firmly or the existing nut is damaged, replacing it with part 942901-00 restores the original fit and function.