{"product_id":"guhring-9055200048000-cobalt-stub-drill-bit-0-189-in","title":"Guhring 9055200048000 Cobalt Stub Drill Bit 0.189 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GUHRING 9055200048000 is a cobalt stub-length (screw machine length) drill bit designed for precise, high-performance drilling in production and maintenance environments. Built to DIN 1897 standards, this 0.189-inch diameter bit features a 118-degree four-facet split point for fast penetration and reduced walking on entry. The two-flute spiral design with web-thinning and a tapered web configuration promotes efficient chip evacuation. The straight-cylindrical shank measures 4.80 millimeters in diameter, fitting standard drill chucks without adapters. At 0.015 pounds, it is a lightweight, single-piece consumable suited for machinists, HVAC fabricators, and metal trades professionals requiring consistent, repeatable hole quality.\u003c\/p\u003e\n\u003cp\u003eThis bit is rated for primary use in aluminum and is well suited to short-reach drilling applications where a stub-length tool reduces deflection and improves hole accuracy. The Series 5520 designation places it within a standardized cobalt-coated line built for repetitive production drilling. A maximum drilling depth of 0.74 inches (18.80 millimeters) and a flute-to-diameter ratio of 3xD make it appropriate for through-holes and shallow blind holes in sheet stock, brackets, and structural components. Wire gauge size 12 corresponds to the 0.189-inch decimal diameter for cross-referencing legacy drill charts.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt tool material with coating for improved heat and wear resistance\u003c\/li\u003e\n  \u003cli\u003e118-degree four-facet split point reduces thrust and minimizes drill walk\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned tapered web for easier chip clearance in short flute length\u003c\/li\u003e\n  \u003cli\u003eDIN 1897 stub-length standard for reduced deflection in close-tolerance work\u003c\/li\u003e\n  \u003cli\u003eRight-hand cut, two-flute spiral geometry suitable for aluminum and similar non-ferrous workpieces\u003c\/li\u003e\n  \u003cli\u003eNo coolant-through design — compatible with standard benchtop and floor drill presses\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-specification stub-length drill bit conforming to DIN 1897, suitable for use in standard drill press chucks, CNC machining centers, and hand-held drill motors accepting a straight-cylindrical shank. Primary workpiece material rating is aluminum per supplier specification.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall in a properly sized chuck and confirm shank is fully seated before operation. Secure the workpiece firmly to prevent movement during drilling. Inspect cutting edges before use and replace when wear reduces hole quality or increases feed force. Follow applicable shop safety protocols including eye protection and chip guarding when operating drilling equipment.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.189 inches (0.1890 decimal inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWire Gauge Size\u003c\/strong\u003e: 12\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Coated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 118 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Four Facet, Split\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral, Regular\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 26.00 millimeters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 62.00 millimeters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 4.80 millimeters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 0.74 inches (18.80 millimeters)\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 Bit Diameter Tolerance\u003c\/strong\u003e: +0.000 to -0.018 millimeters\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Stub\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Aluminum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 5520\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: DIN 1897\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.015 pounds\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: 9055200048000\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51730268225842,"sku":"9055200048000","price":20.16,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/905a5006a23292a1fffffa23d3b1b98c_f7fded62-1059-4918-a36f-d7e8cf777317.jpg?v=1788714344","url":"https:\/\/voomisupply.com\/products\/guhring-9055200048000-cobalt-stub-drill-bit-0-189-in","provider":"Voomi Supply","version":"1.0","type":"link"}