RobbJack NR-204-18 is a 9/16-inch diameter, two-flute square end mill from RobbJack’s NR series, built as a solid carbide tool in the NR C-2 grade for dependable precision milling. This NR-204-18 version is uncoated (No Flats, Uncoated NR-204-18) with a 1-1/4 inch length of cut (LOC), a 9/16 inch shank diameter, and an overall length of 3-1/2 inches. The NR-204-18 specification aligns with RobbJack’s standard-length carbide end mills; the 2022 catalog lists NR-204-18 among NR C-2 Grade Carbide End Mills with similar dimensions. Ideal for general-purpose milling requiring a square-end geometry in the 9/16 inch diameter range.
