{"product_id":"guhring-9055200065300-cobalt-stub-drill-bit-6-53mm","title":"Guhring 9055200065300 Cobalt Stub Drill Bit 6.53mm","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GUHRING 9055200065300 is a cobalt screw machine length (stub) drill bit designed for precision hole-making in production and maintenance environments. Built to DIN 1897 standards, this Series 5520 bit features a 6.53 mm diameter with a 118-degree four facet split point and a web-thinned, tapered web configuration for reduced thrust and cleaner entry. The two-flute spiral design with a straight-cylindrical shank suits standard drill chucks without modification. Weighing 0.029 pounds, it is sized for high-cycle drilling operations where rigidity and tool life matter. Licensed machinists, tool-and-die professionals, and maintenance technicians are the primary users of this bit.\u003c\/p\u003e\n\u003cp\u003eThis bit is rated for primary use in aluminum workpieces and is well suited for applications requiring short, rigid tooling in CNC machining centers, drill presses, and hand-held pneumatic or electric drilling equipment. The stub length body limits deflection in tight clearance situations and improves hole straightness at moderate depths. Maximum drilling depth is 21.21 mm (0.835 inches), making it appropriate for through-holes and blind holes in thin to medium stock. The right-hand cutting direction is standard for conventional drill spindle rotation.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt tool material provides heat and wear resistance in ferrous and non-ferrous materials\u003c\/li\u003e\n  \u003cli\u003e118-degree four facet split point with web thinning reduces walking and lowers required thrust\u003c\/li\u003e\n  \u003cli\u003eDIN 1897 stub length for increased rigidity and reduced deflection versus jobber-length bits\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank fits standard three-jaw chucks without adapters\u003c\/li\u003e\n  \u003cli\u003eRegular spiral flute geometry promotes chip evacuation in aluminum and similar materials\u003c\/li\u003e\n  \u003cli\u003eNo coolant-through design simplifies setup in standard drilling applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-use stub drill bit for applications requiring a Letter F (6.53 mm) diameter bit conforming to DIN 1897 Series 5520 specifications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation of this bit requires a compatible drill chuck or collet sized to accept a 6.53 mm straight-cylindrical shank. Ensure the drilling machine spindle is fully stopped and locked before inserting or removing the bit. Secure the shank fully within the chuck jaws to the recommended engagement depth to prevent pullout under load. Always follow applicable machine guarding and PPE requirements per shop safety standards.\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: F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 6.53 mm\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\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\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: 31.00 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 70.00 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 6.53 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 21.21 mm (0.835 inches)\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\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\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\u003ePrimary Workpiece Material\u003c\/strong\u003e: Aluminum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: +0.000 to -0.022 mm\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: 0.029 pounds\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: 9055200065300\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51732333723954,"sku":"9055200065300","price":23.43,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/905a5006a23292a1fffffa23d3b1b98c_c4dadd57-4800-4661-a8a0-7de70f205407.jpg?v=1788741738","url":"https:\/\/voomisupply.com\/products\/guhring-9055200065300-cobalt-stub-drill-bit-6-53mm","provider":"Voomi Supply","version":"1.0","type":"link"}