Arch Cutting Tools 166714 3/4 in 4FL SE AlTiN Carbide End Mill
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The Arch Cutting Tools 166714 is a new, solid micrograin carbide, 4-flute square-end end mill with a 3/4 in cutting diameter and a 3/4 in straight shank, featuring an AlTiN (Aluminum Titanium Nitride) coating for elevated hardness, oxidation resistance, and heat deflection — making it well-suited for dry or semi-dry cutting in steel, stainless steel, cast iron, and hardened ferrous materials. The label specifies a 1-1/2 in length of cut (LOC) and a 4 in overall length (OAL), providing a standard reach geometry compatible with ER-style collet chucks, milling machine arbors, and shrink-fit holders accepting a 3/4 in shank. Micrograin carbide substrate offers a fine grain structure that supports a sharper cutting edge with improved toughness compared to standard-grain carbide, while the square (SE) end geometry enables slotting, profiling, and peripheral milling operations.
Product Specifications
| Brand | Arch Cutting Tools |
| MPN | 166714 |
| Cutting Diameter | 3/4 in (0.750 in) |
| Shank Diameter | 3/4 in (0.750 in) |
| Number of Flutes | 4 |
| End Style | Square (Flat) |
| Length of Cut (LOC) | 1-1/2 in (1.500 in) |
| Overall Length (OAL) | 4 in |
| Substrate | Solid Micrograin Carbide |
| Coating | AlTiN (Aluminum Titanium Nitride) |
| Shank Type | Straight (Cylindrical) |
| Condition | New |