{"product_id":"osg-vgm5-1031-square-end-mill-1-4-in-5-flute-carbide","title":"Osg VGM5-1031 Square End Mill 1\/4 in 5 Flute Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG VGM5-1031 is a 5-flute solid carbide square end mill designed for high-performance milling in demanding machining environments. With a 1\/4 inch cutting diameter and a 5\/16 inch length of cut, this tool is built for precision material removal in ferrous and non-ferrous applications. The micrograin carbide substrate and EXO coating work together to extend tool life and maintain edge integrity under elevated cutting speeds. A 40-degree helix angle promotes smooth chip evacuation and reduces cutting forces. Machinists and CNC operators in job shops and production environments install this end mill for finishing and semi-finishing passes where surface quality and dimensional accuracy are critical.\u003c\/p\u003e\n\u003cp\u003eThe VGM5-1031 belongs to OSG's VGM5-LN series, which is engineered for variable-index geometry. The variable index spacing between flutes reduces harmonic vibration during the cut, making this tool well-suited for thin-wall parts, deep-cavity milling, and situations where chatter is a known challenge. It is a single-end, right-hand cutting, right-hand flute tool with extended reach capability, appropriate for vertical machining centers and multi-axis CNC equipment running at typical high-speed parameters for carbide tooling.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e5-flute design increases feed rate capability compared to standard 4-flute end mills\u003c\/li\u003e\n  \u003cli\u003eVariable index flute spacing reduces chatter and harmonic vibration\u003c\/li\u003e\n  \u003cli\u003eEXO coating improves wear resistance and lubricity at the cutting edge\u003c\/li\u003e\n  \u003cli\u003e40-degree helix angle promotes efficient chip evacuation\u003c\/li\u003e\n  \u003cli\u003eMicrograin solid carbide substrate maintains edge sharpness under high cutting loads\u003c\/li\u003e\n  \u003cli\u003eCentercutting geometry allows plunge entry without a pre-drilled pilot hole\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-fit cutting tool for 1\/4 inch straight-cylindrical shank collets and tool holders on CNC vertical machining centers and milling machines. Part of the OSG VGM5-LN series.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and the tool holder is clean and free of debris before seating the shank. Use the appropriate collet or end mill holder rated for a 1\/4 inch straight-cylindrical shank, and torque the retention hardware according to the tool holder manufacturer's specifications. Verify runout with a dial indicator after clamping before initiating a cut.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 0.2500 inches (1\/4 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength of Cut\u003c\/strong\u003e: 0.3125 inches (5\/16 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length (OAL)\u003c\/strong\u003e: 4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.2500 inches (1\/4 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHelix Angle\u003c\/strong\u003e: 40 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Mill Material\u003c\/strong\u003e: Solid Carbide, Micrograin\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: EXO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Helical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnd Type\u003c\/strong\u003e: Single End\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCentercutting\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable Index\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVariable Helix\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eExtended Reach\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: VGM5-LN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.1 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: OSG\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: VGM5-1031\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51730242371890,"sku":"VGM5-1031","price":76.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4acc9e067a735f8ddf33acb3575bf7a5_8d5a8f6f-ff7a-4f22-bc17-2ae5c2249e88.jpg?v=1788713956","url":"https:\/\/voomisupply.com\/products\/osg-vgm5-1031-square-end-mill-1-4-in-5-flute-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}