{"product_id":"guhring-9006220062500-cobalt-drill-bit-letter-d","title":"Guhring 9006220062500 Cobalt Drill Bit Letter D","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe GUHRING 9006220062500 is a cobalt jobber length drill bit sized to letter D (0.2461 inches) with a 130-degree split point and a parabolic flute geometry. Built to DIN 338 standards, this bit is designed for high-performance drilling applications where standard HSS bits fall short. The bright, uncoated finish keeps heat transfer efficient and allows for easy wear inspection. A web-thinned, tapered web design reduces thrust force at the point and improves chip evacuation. Licensed HVAC technicians, machinists, plumbers, and electricians working with aluminum and non-ferrous metals rely on this geometry for clean entry and consistent hole sizing. It ships individually and is rated as a high-performance grade tool in the Series 622 lineup.\u003c\/p\u003e\u003cp\u003eThis drill bit is best suited for drilling aluminum, non-ferrous metals, and plastics in production or field service environments. The parabolic flute profile handles deep hole drilling efficiently, with a maximum drilling depth of 2.111 inches. The straight-cylindrical shank seats securely in standard keyed or keyless chucks. Trades working on sheet metal layout, conduit knockout pre-drilling, or mechanical attachment points will find the letter D sizing accurate and repeatable for tapping or close-tolerance fits.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCobalt construction provides heat and wear resistance beyond standard HSS bits\u003c\/li\u003e\n\u003cli\u003e130-degree point angle with web thinning reduces thrust and improves self-centering on entry\u003c\/li\u003e\n\u003cli\u003eParabolic flute design with a 5xD flute-to-diameter ratio supports efficient chip evacuation in deep holes\u003c\/li\u003e\n\u003cli\u003eBright uncoated finish allows direct visual wear inspection without coating interference\u003c\/li\u003e\n\u003cli\u003eRight-hand cut with straight-cylindrical shank fits standard drill chucks without adapters\u003c\/li\u003e\n\u003cli\u003eMeets DIN 338 specification for consistent dimensional tolerances\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a DIN 338 jobber length drill bit compatible with standard straight-shank drill chucks used in handheld drills, drill presses, and CNC drilling equipment suitable for letter D sizing.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis bit is installed by a qualified tradesperson using a keyed or keyless drill chuck rated for the shank diameter. Always secure the workpiece before drilling and ensure chuck jaws are fully tightened before operation. Use appropriate cutting fluid when drilling ferrous or hard materials to extend bit life. Inspect the cutting edges for wear or chipping before each use and replace when the point geometry is no longer intact.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: D\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.2461 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\u003eFlute Type\u003c\/strong\u003e: Parabolic\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\u003eOverall Length\u003c\/strong\u003e: 3-31\/32 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2-15\/32 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 2.111 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.2461 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Material\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish\/Coating\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute By Diameter Ratio\u003c\/strong\u003e: 5xD\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 Grade\u003c\/strong\u003e: High Performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: -0.022 to 0.000 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 622\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: DIN 338\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 9006220062500\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51727145795890,"sku":"9006220062500","price":44.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/48d86c0652447357052415f470e74b94.jpg?v=1788673997","url":"https:\/\/voomisupply.com\/products\/guhring-9006220062500-cobalt-drill-bit-letter-d","provider":"Voomi Supply","version":"1.0","type":"link"}