Product Overview
general-purpose roughing and finishing at 21/64" diameter you really want a trustworthy coated approach, and the 140-3281-ALTiN gives that. It’s a 4-flute square end mill that works well for slots, profiles, plunge cuts, side wall milling, and those cleaner flat-bottom jobs too. The ALTiN coating helps with heat resistance and wear resistance when the machining gets tougher, not just easy passes. You also get a 7/8" length of cut, 2-1/2" overall length, and a 30° helix angle, so this 140 Series cutter delivers steady square-end behavior across a lot of CNC materials.
Tool Specifications:
- Diameter: 21/64"
- Shank: 3/8"
- Length of Cut (LOC): 7/8"
- Overall Length (OAL): 2-1/2"
- Flutes: 4 Flute
- End Style: Square End
- Material: Solid Carbide
- Coating: ALTiN
- Radius: No
- Series: 140 Series
- Part No: 140-3281-ALTiN
Key Performance Features:
- 4-flute square end built for roughing and finishing
- 21/64" diameter supports controlled stock removal
- ALTiN coating improves heat and wear resistance
- 30° helix supports smooth chip movement
- Handles slotting, profiling, plunging, and side wall milling
- Cuts mild steel, stainless, cast iron, titanium, non-ferrous, plastics, and composites
