{"product_id":"cleveland-c33072-square-end-mill-21-64-in-4-flute-hss-tin","title":"Cleveland C33072 Square End Mill 21\/64 in 4 Flute Hss Tin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe CLEVELAND C33072 is a double-end, four-flute square end mill engineered for precision milling in ferrous and non-ferrous materials. Built from high speed steel (HSS) with a titanium nitride (TiN) coating, it offers improved surface hardness and extended tool life compared to uncoated HSS tooling. The cutter measures 21\/64 inch (0.3281 inches) in diameter with a 3\/4 inch length of cut and a 3\/8 inch straight cylindrical shank with a Weldon flat for positive drive. Spiral flutes at a 30-degree helix angle promote efficient chip evacuation. This is a center-cutting tool, meaning it can plunge directly into a workpiece. It belongs to the Series HD-4C line and is suited for shops and machinists running production or maintenance milling operations.\u003c\/p\u003e\u003cp\u003eThe C33072 is designed for milling cast iron, non-ferrous metals such as aluminum and brass, and steel. Its regular-length geometry and double-end configuration make it a practical choice for general-purpose profile milling, slotting, and light shoulder work on manual mills and CNC machining centers. Right-hand cut and right-hand flute orientation are standard for conventional spindle rotation. The TiN finish adds lubricity and wear resistance, extending intervals between tool changes in moderate-duty applications.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eDouble-end design doubles usable tool life per unit\u003c\/li\u003e\n\u003cli\u003eTiN coating increases surface hardness and reduces friction at the cutting edge\u003c\/li\u003e\n\u003cli\u003eCenter-cutting geometry allows direct plunge entry without pre-drilling\u003c\/li\u003e\n\u003cli\u003e30-degree helix angle promotes smooth chip flow and reduces cutting forces\u003c\/li\u003e\n\u003cli\u003eWeldon flat on 3\/8 inch shank prevents slippage under load\u003c\/li\u003e\n\u003cli\u003eRight-hand cut and right-hand flute for standard spindle setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in standard 3\/8 inch collets or Weldon-style end mill holders on manual knee mills, bridgeport-style machines, and CNC machining centers. Primary workpiece materials include cast iron, non-ferrous metals, and steel as specified by the manufacturer.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist following shop safety protocols. Power down and lock out the spindle before changing tooling. Seat the shank fully into the holder and tighten the set screw against the Weldon flat to the holder manufacturer's specification. Verify runout with a dial indicator before beginning a cut, as excessive runout accelerates edge wear and degrades surface finish.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 21\/64 inch (0.3281 inches)\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: High Speed Steel (HSS)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Titanium Nitride (TiN)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 3\/4 inch (0.7500 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/8 inch (0.3750 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 30 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical with Weldon Flat\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\u003eCentercutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble End\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HD-4C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Materials\u003c\/strong\u003e: Cast Iron, Non-Ferrous Metal, Steel\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: CLEVELAND\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: C33072\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CLEVELAND CONTROLS","offers":[{"title":"Default Title","offer_id":51692779602226,"sku":"C33072","price":74.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ccc3ef17efa09165200daa649842abe1.jpg?v=1788302759","url":"https:\/\/voomisupply.com\/products\/cleveland-c33072-square-end-mill-21-64-in-4-flute-hss-tin","provider":"Voomi Supply","version":"1.0","type":"link"}