Kennametal HPFDM625S6156 KC633M 6-Flute 5/8" Carbide Finishing End Mill
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This is a new Kennametal HPFDM625S6156 HP Carbide Finishing End Mill for Die & Mold applications, ground in KC633M grade — a fine-grain submicron carbide substrate with a multilayer TiAlN-based PVD coating engineered for high-hardness steels, tool steels, and mold steels up to approximately 65 HRC. The part number decodes as follows: HPFDM = HP Finishing Die & Mold series, 625 = 5/8" (0.625") cutter diameter, S6 = 6-flute, 156 = 1-9/16" length of cut; the shank diameter matches the cutter diameter at 5/8". The 6-flute geometry with variable helix and variable pitch provides chatter-damping characteristics suited to high-speed finishing passes in hardened die and mold steels, delivering superior surface finish at elevated speeds and feeds compared to standard carbide end mills. Compatible with ER, shrink-fit, and hydraulic toolholders with a 5/8" bore; the cylindrical shank is suitable for precision collet chucks requiring h6 shank tolerance.
Product Specifications
| Brand | Kennametal |
| Part Number (MPN) | HPFDM625S6156 |
| Grade | KC633M |
| Series | HP Carbide Finishing End Mill Die & Mold (HPFDM) |
| Cutter Diameter | 5/8 in (0.625 in) |
| Shank Diameter | 5/8 in (0.625 in) |
| Number of Flutes | 6 |
| Length of Cut (Flute Length) | 1-9/16 in (1.5625 in) |
| End Type | Square (flat) end |
| Substrate | Submicron fine-grain solid carbide |
| Coating | TiAlN-based PVD multilayer (KC633M grade) |
| Application | Die & Mold finishing, hardened steels, tool steels |
| Condition | New |
| Kennametal Item Number | 117838817 |
| Helix / Pitch | Variable helix / variable pitch |
| Shank Type | Cylindrical (straight shank) |