{"product_id":"guhring-9005520063500-drill-bit-letter-e-0-2500-in-hss","title":"Guhring 9005520063500 Drill Bit Letter E 0.2500 in Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GUHRING 9005520063500 is a screw machine length (stub) drill bit designed for high-performance drilling in production and shop environments. Built from high-speed steel (HSS) with a bright, uncoated finish, this bit features a 130-degree cone relief point and a parabolic flute geometry that promotes fast chip evacuation and reduced heat buildup. It carries a Letter E designation, corresponding to a 0.2500-inch diameter, with an overall length of 2.75 inches and a maximum drilling depth of 0.846 inches. The shorter stub length increases rigidity and reduces deflection, making it well suited for accurate hole-starting in CNC machines, drill presses, and screw machine applications.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is intended for use in metal fabrication, machining, and production drilling operations. Its parabolic flute design and web-thinned point are optimized for cutting steel, aluminum, and other non-ferrous materials. The straight cylindrical shank at 0.2500 inches in diameter fits standard drill chucks without modification. The 3xD flute-to-diameter ratio and parallel web configuration make this bit reliable for repetitive, high-cycle drilling tasks in both job shop and production floor settings. It is sold individually.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eLetter E (0.2500 inch) diameter with a diameter tolerance of +0.000 to -0.022 mm for consistent hole sizing\u003c\/li\u003e\n  \u003cli\u003e130-degree cone relief point reduces thrust force and improves self-centering on entry\u003c\/li\u003e\n  \u003cli\u003eParabolic fast-spiral flutes promote efficient chip evacuation and reduce heat in deep cuts\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned design lowers cutting resistance and extends tool life in steel and non-ferrous materials\u003c\/li\u003e\n  \u003cli\u003eStub length (2.75 inches OAL) increases rigidity and minimizes deflection compared to jobber-length bits\u003c\/li\u003e\n  \u003cli\u003eMeets DIN 1897 specification for consistent dimensional quality\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a DIN 1897 Series 552 stub-length drill bit compatible with standard 0.2500-inch straight-shank drill chucks. Suitable for drilling steel, aluminum, and non-ferrous workpiece materials.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists or tool-and-die technicians using a standard keyed or keyless drill chuck rated for the 0.2500-inch shank diameter. Ensure the machine spindle is fully stopped and locked out before changing tooling. Verify chuck runout before use to maintain hole-diameter tolerance, and apply appropriate cutting fluid for the workpiece material to extend tool life and protect the uncoated HSS surface.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: E\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.2500 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 130 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.219 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 0.846 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.2500 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.5354 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: High-Speed Steel (HSS)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Parabolic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Fast\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\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\u003eWeb Configuration\u003c\/strong\u003e: Parallel, Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Stub (Screw Machine Length)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: +0.000 to -0.022 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel, Aluminum, Non-Ferrous\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 552\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: DIN 1897\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: High Performance\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: GUHRING\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 9005520063500\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51728739828018,"sku":"9005520063500","price":28.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/782f0164dd06eafaa99b330599a5da47.jpg?v=1788695677","url":"https:\/\/voomisupply.com\/products\/guhring-9005520063500-drill-bit-letter-e-0-2500-in-hss","provider":"Voomi Supply","version":"1.0","type":"link"}