{"product_id":"value-collection-e1419004-solid-pilot-counterbore-8mm","title":"Value Collection E1419004 Solid Pilot Counterbore 8mm","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION E1419004 is a solid pilot counterbore designed for precision countersinking and seat-finishing operations in metalworking and machining applications. Built from cobalt steel for extended tool life in harder materials, this counterbore features a 8 mm cutting diameter, a 4.5 mm pilot diameter, and a 3-flute cutting geometry that promotes chip evacuation and smooth finish. The straight cylindrical shank measures 0.312 inches in diameter for secure chuck or holder engagement. Overall length is 88.9 mm. This tool is well suited for machinists, toolmakers, and maintenance technicians who need a reliable, single-piece counterbore for production or repair work.\u003c\/p\u003e\n\u003cp\u003eThis counterbore is used wherever a precision counterbored seat is required ahead of a fastener or fitting. It is appropriate for use in ferrous and non-ferrous metals, and the forward cutting direction makes it compatible with standard right-hand spindle machines including drill presses, CNC machining centers, and manual milling machines. The 4.5 mm pilot registers in a pre-drilled pilot hole to ensure concentricity of the counterbore seat with the through bore. Compatible fastener size is 4 mm.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt steel construction for improved hardness and heat resistance versus standard high-speed steel\u003c\/li\u003e\n  \u003cli\u003e8 mm counterbore diameter with 4.5 mm pilot diameter for accurate seat registration\u003c\/li\u003e\n  \u003cli\u003e3-flute geometry promotes chip clearance and consistent surface finish\u003c\/li\u003e\n  \u003cli\u003eStraight cylindrical shank at 0.312 inches for broad chuck and collet compatibility\u003c\/li\u003e\n  \u003cli\u003eForward cutting direction compatible with standard right-hand spindle machines\u003c\/li\u003e\n  \u003cli\u003eCompatible with 4 mm fasteners\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-use solid pilot counterbore for standard right-hand spindle drilling and milling equipment accepting a 0.312-inch straight cylindrical shank, used with 4 mm fastener applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and use should be performed by qualified machinists or toolroom personnel familiar with rotating cutting tools. Before mounting, confirm spindle speed is set appropriately for the workpiece material and tool diameter. Secure the shank fully in the chuck or collet before starting the machine, and verify pilot hole diameter matches the 4.5 mm pilot prior to operation. Always use cutting fluid appropriate to the workpiece material to maximize tool life and finish quality.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCounterbore Diameter\u003c\/strong\u003e: 8 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePilot Diameter\u003c\/strong\u003e: 4.5 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.312 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 88.9 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Forward\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Fastener Size\u003c\/strong\u003e: 4 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Cobalt Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.08 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241603\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: VALUE COLLECTION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: E1419004\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51689514729778,"sku":"E1419004","price":37.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/8b2377ed5b992fa4a7f8814ab25cc37c.jpg?v=1788260715","url":"https:\/\/voomisupply.com\/products\/value-collection-e1419004-solid-pilot-counterbore-8mm","provider":"Voomi Supply","version":"1.0","type":"link"}