{"product_id":"accupro-39435-square-end-mill-5-16-inch-4-flute-tialn","title":"Accupro 39435 Square End Mill 5\/16 Inch 4 Flute Tialn","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO 39435 is a square end mill designed for precision milling operations in ferrous and hardened materials. Built from powdered metal with a TiAlN (titanium aluminum nitride) finish, it delivers improved heat resistance and extended tool life compared to standard HSS tooling. The 5\/16 inch cutting diameter and 4-flute spiral geometry produce a clean surface finish while efficiently evacuating chips. At 2-1\/2 inches overall length with a 3\/4 inch length of cut, this end mill fits standard toolholders and suits general-purpose profiling, slotting, and peripheral milling. Centercutting capability allows direct plunge entry without a pre-drilled hole. Installed by machinists and CNC operators in job shop and production environments.\u003c\/p\u003e\u003cp\u003eThis end mill is well suited for machining steel, stainless steel, cast iron, and similar materials on vertical mills, CNC machining centers, and knee mills. The 3\/8 inch shank diameter fits standard collets and end mill holders. Right-hand cut and right-hand flute orientation match conventional spindle rotation. The spiral flute design promotes smooth cutting action and reduces chatter during side milling and finishing passes. This tool is appropriate for both light profiling and moderate material removal in shop and production settings.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eTiAlN coating improves heat resistance and extends tool life in ferrous materials\u003c\/li\u003e\n\u003cli\u003ePowdered metal substrate provides hardness and wear resistance beyond standard HSS\u003c\/li\u003e\n\u003cli\u003e4-flute spiral design delivers improved surface finish and chip evacuation\u003c\/li\u003e\n\u003cli\u003eCentercutting geometry allows direct plunge milling without pre-drilling\u003c\/li\u003e\n\u003cli\u003eRight-hand cut and right-hand flute for standard spindle operation\u003c\/li\u003e\n\u003cli\u003eNo chipbreaker and no extended reach — optimized for rigidity in standard-depth cuts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct-fit replacement for standard 3\/8 inch shank square end mill applications in CNC machining centers, vertical mills, and knee mills using compatible collet or end mill holder tooling.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Seat the shank fully in the collet or holder to the recommended engagement depth and tighten to the toolholder manufacturer specification. Verify runout with a dial indicator before beginning a cut, as excessive runout accelerates tool 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: 5\/16 inches (0.3125 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 3\/4 inches (0.7500 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/8 inches (0.3750 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-1\/2 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: Powdered Metal\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\/Coating\u003c\/strong\u003e: TiAlN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\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\u003eChipbreaker\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\u003eMill Diameter Tolerance\u003c\/strong\u003e: +0.003 \/ -0.000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter Tolerance\u003c\/strong\u003e: -0.0001 \/ -0.0005 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.9 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: ACCUPRO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 39435\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51732794507570,"sku":"39435","price":61.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c4f6c60fee6b3223aee6bb1846b09f45.jpg?v=1788746890","url":"https:\/\/voomisupply.com\/products\/accupro-39435-square-end-mill-5-16-inch-4-flute-tialn","provider":"Voomi Supply","version":"1.0","type":"link"}