CARBIDE ENDMILLS LONG NECK SERIES

A “long neck” (or “long reach” / “neck relief”) end-mill is a tool with an extended neck (shank-to-cutting length) or reduced-diameter neck region so the cutting flutes can reach into deeper or more restricted areas, while the shank/holder remains clamped. These are useful for applications like deep cavities, ribs, mold work, or when side-wall clearance is required.

Key features and specs you’ll see:

• Extended overall length or longer “length of cut” (LOC) or “below shank” portion. For example: “long-neck radius end mills for hard materials” in Union Tool Co. catalog. 

• Neck relief: the section below the shank is often thinner (neck diameter smaller) or at least has clearance so the part wall doesn’t interfere. Example: a “long neck corner radius end mill” from INMAN TOOLS, Material: carbide, coated, for HRC 55/65 steels. 

• Depending on the material & coating: many are built for harder materials (HRC50–65, etc) or for deep pocketing where tool rigidity and clearance both matter. Example: “4 flutes long neck radius end mill for hard material (HRC65)” from a Japanese supplier. 

• Specialty coatings and careful tolerance control: e.g., “Long Reach Neck Relief Ball Nose – Fractional” from MaxCut: TiAlN coated, 4-flute, etc.