DeWalt 391969-00 — Inner flange / clamp washer (M14)

Restore secure, wobble-free disc clamping with this genuine DeWalt inner flange (clamp washer) part no. 391969-00. Designed for angle grinders with an M14 spindle, the precision steel washer provides a true seating surface beneath cutting, grinding or flap discs and works with the outer flange/nut to keep accessories aligned and properly tightened.

Fits many DeWalt small and 100–125 mm angle grinders — examples include DCG405, DCG414, DWE4010, DWE4234, DW818, DW831 and several D28153 / DWE4150 . Use it to replace a worn, damaged or missing inner flange so your disc runs concentric and the tool operates safely.

Sold as a single original DeWalt part (391969-00). If your grinder uses an M14 spindle and the inner flange is the missing or worn piece, this is the direct-fit DeWalt replacement to restore factory clamping performance.