Original DeWalt lock nut — part number 5140135-59. Heavy-duty steel lock nut designed to secure the saw’s internal assembly where a retaining nut is required; finished for reliable thread engagement and to resist loosening under vibration. Approximate external size listed by parts documentation is ~32 × 32 × 16.5 mm (converted from supplier listing), sold individually so you can replace the worn or damaged nut and restore proper clamping of the assembly.

Direct fit for DeWalt jobsite/table saw models shown in the parts diagrams, including DWE7491 (Type 1 & Type 2) — use this exact part number when matching to the parts diagram for your model.

Includes: (1) genuine DeWalt lock nut, part 5140135-59, ready to install in the location shown on the machine’s parts diagram.