{"product_id":"hertel-44839421-roughing-end-mill-1-2-in-4-flute-cobalt-m42","title":"Hertel 44839421 Roughing End Mill 1\/2 in 4 Flute Cobalt M42","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL 44839421 is a single-end cobalt roughing end mill designed for aggressive material removal in milling applications. Built from M42 cobalt high-speed steel, it delivers heat and wear resistance needed for roughing cuts on tough workpiece materials. The 1\/2 inch diameter tool features 4 flutes with a coarse pitch geometry that breaks chips efficiently and reduces cutting forces during heavy stock removal. The bright, uncoated finish keeps the tool in its as-ground state, suitable for a wide range of metals. This end mill is installed and operated by machinists and tool-and-die professionals in manual or CNC milling setups.\u003c\/p\u003e\n\u003cp\u003eThis roughing end mill fits standard 1\/2 inch milling chucks, collets, and end mill holders. The coarse-pitch flute design is well suited for roughing passes on carbon steel, alloy steel, stainless steel, and other ferrous metals where high material removal rate is the priority. With a 5\/8 inch length of cut and 2-5\/8 inch overall length, it is sized for shallow-to-moderate depth roughing operations in both vertical and horizontal milling machines. Right-hand cutting and right-hand flute direction are standard for conventional and climb milling.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eM42 cobalt HSS construction for elevated heat resistance during roughing cuts\u003c\/li\u003e\n  \u003cli\u003eCoarse pitch, 4-flute geometry promotes chip breaking and reduces chatter\u003c\/li\u003e\n  \u003cli\u003e1\/2 inch shank diameter fits standard collets and end mill holders without adapters\u003c\/li\u003e\n  \u003cli\u003eBright uncoated finish — no coating buildup to affect dimensional accuracy\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut and right-hand helix for conventional milling compatibility\u003c\/li\u003e\n  \u003cli\u003eSingle-end design with 5\/8 inch length of cut for controlled roughing depth\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a direct-fit roughing end mill for any standard 1\/2 inch end mill holder, collet chuck, or Weldon-style holder used in CNC or manual milling machines. No specific OEM equipment compatibility was stated in the product data.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist following the machine tool manufacturer guidelines for tool holding and runout tolerances. Ensure the spindle is fully powered down and locked before inserting or removing the end mill from the holder. This tool is not center-cutting and should not be used for plunge entry — use a pilot hole or ramping entry path instead. Inspect shank and holder bore for chips or damage before securing to maintain runout within acceptable limits.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 1\/2 inch (0.5000 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Cobalt (M42 HSS)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePitch\u003c\/strong\u003e: Coarse\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 5\/8 inch (0.6250 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-5\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1\/2 inch (0.5000 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: -0.0001 to -0.0005 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.00394 to -0.00197 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSingle or Double End\u003c\/strong\u003e: Single End\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCentercutting\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExtended Reach\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable Helix\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 4.88 x 0.71 x 0.59 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01852 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27112803\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: HERTEL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 44839421\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51727781232946,"sku":"44839421","price":56.65,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/657d5f7f09e2e47876461f3011879580.jpg?v=1788682259","url":"https:\/\/voomisupply.com\/products\/hertel-44839421-roughing-end-mill-1-2-in-4-flute-cobalt-m42","provider":"Voomi Supply","version":"1.0","type":"link"}