{"product_id":"cleveland-c31993-square-end-mill-5-16-in-4-flute-pm-4","title":"Cleveland C31993 Square End Mill 5\/16 in 4 Flute PM-4","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe CLEVELAND C31993 is a 4-flute square end mill designed for general-purpose milling in a wide range of metalworking applications. Built from M42 powdered metal with a TiCN finish, it delivers consistent cutting performance and extended tool life compared to standard high-speed steel tooling. The end mill measures 0.3125 inches in diameter with a 0.75-inch length of cut and a 0.375-inch straight-cylindrical shank with Weldon flat. At 2.5 inches overall length, it fits standard toolholders used in vertical and horizontal milling setups. The 37-degree helix and spiral flute geometry promote chip evacuation and reduce heat buildup during cuts. Centercutting capability allows plunge entry without a pre-drilled pilot hole.\u003c\/p\u003e\u003cp\u003eThis end mill is suited for milling operations on ferrous and non-ferrous metals, heat-resistant alloys, and similar materials as indicated by workpiece material codes H, K, M, P, and S. It is used in job shops, maintenance facilities, and production environments for slotting, profiling, and peripheral milling. The right-hand cut and right-hand flute configuration match the standard spindle rotation of most CNC and manual milling machines. Its regular-length geometry makes it a practical choice for general-depth cuts where extended reach is not required.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM42 powdered metal construction for improved wear resistance over standard HSS\u003c\/li\u003e\n\u003cli\u003eTiCN coating reduces friction and extends tool life in demanding materials\u003c\/li\u003e\n\u003cli\u003e4-flute, spiral geometry with 37-degree helix angle for efficient chip removal\u003c\/li\u003e\n\u003cli\u003eCentercutting design allows direct plunge cuts without pilot drilling\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank with Weldon flat for secure toolholder seating\u003c\/li\u003e\n\u003cli\u003eRight-hand cut and right-hand flute for standard spindle compatibility\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct-fit replacement-style end mill for applications within the CLEVELAND PM-4 series, compatible with standard 3\/8-inch collets, end mill holders, and Weldon-flat toolholders used in CNC and manual milling machines.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and locked out before mounting or removing the end mill. Seat the shank fully into the holder and torque the set screw against the Weldon flat per the toolholder manufacturer guidelines. Verify runout with a dial indicator before beginning cuts, and confirm that cutting parameters are appropriate for the workpiece material and machine rigidity.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMill Diameter\u003c\/strong\u003e: 5\/16 inch (0.3125 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, M42 grade\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiCN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 3\/4 inch (0.75 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/8 inch (0.375 inches)\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\u003eOverall Length\u003c\/strong\u003e: 2.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 37 degrees\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\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\u003eSeries\u003c\/strong\u003e: PM-4\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material Codes\u003c\/strong\u003e: H, K, M, P, S\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: C31993\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CLEVELAND CONTROLS","offers":[{"title":"Default Title","offer_id":51691385028914,"sku":"C31993","price":79.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/12e32f63c565b1a70b3a53403ada863d.jpg?v=1788284270","url":"https:\/\/voomisupply.com\/products\/cleveland-c31993-square-end-mill-5-16-in-4-flute-pm-4","provider":"Voomi Supply","version":"1.0","type":"link"}