{"product_id":"guhring-9006590065300-cobalt-stub-drill-bit-0-2571in","title":"Guhring 9006590065300 Cobalt Stub Drill Bit 0.2571in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GUHRING 9006590065300 is a cobalt stub-length (screw machine length) drill bit designed for demanding metal-cutting applications. Built to DIN 1897 standards, this right-hand-cut bit features a 130-degree split point, a parabolic flute geometry, and a web-thinned tip that reduces thrust and improves chip evacuation in tough materials. At 0.2571 inches (Letter F) in diameter, it carries a diameter tolerance of +0.000 to -0.022 mm, making it a heavy-duty tool suited for precision hole production. Licensed HVAC, mechanical, and industrial maintenance trades reach for cobalt-grade stub drills when working through hardened steel, stainless, or titanium alloy components.\u003c\/p\u003e\n\u003cp\u003eThis bit is rated by the manufacturer for primary use in titanium alloy workpieces, where heat buildup and work hardening are constant concerns. The stub-length body limits deflection in short-reach setups such as drill presses and CNC machining centers. The parabolic flute design moves chips out of the cut efficiently, reducing re-cutting and heat at the tip. A straight-cylindrical shank fits standard drill chucks and collets without modification. Maximum drilling depth is 0.835 inches (21.21 mm), consistent with a 3xD flute-to-diameter ratio. Overall tool length is approximately 2.76 inches (70.00 mm), with a flute length of approximately 1.22 inches (31.00 mm).\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt tool material provides heat resistance for cutting titanium alloy and other difficult metals\u003c\/li\u003e\n  \u003cli\u003e130-degree split point with web thinning reduces entry thrust and improves centering\u003c\/li\u003e\n  \u003cli\u003eParabolic flute geometry accelerates chip removal and reduces heat buildup\u003c\/li\u003e\n  \u003cli\u003eStub length minimizes deflection in tight or short-reach drilling setups\u003c\/li\u003e\n  \u003cli\u003eDIN 1897 specification with parallel web configuration for consistent geometry\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank fits standard drill chucks and ER collets without modification\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-specification stub drill per DIN 1897 in the Letter F (0.2571-inch) size range, suitable for use in any drill press, machining center, or handheld drill driver accepting a straight-cylindrical shank in the 0.2500 to 0.3000-inch diameter range.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis drill bit is intended for use by machinists and maintenance technicians on metalworking equipment. Secure the shank fully in the chuck or collet before operation and verify runout before drilling. When cutting titanium alloy or hardened steel, use appropriate cutting fluid to manage heat and extend tool life. Inspect the cutting edges and web before each use and replace the bit if chipping or excessive wear is observed.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.2571 inches (Letter F)\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: 70.00 mm (approximately 2.76 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 31.00 mm (approximately 1.22 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 0.835 inches (21.21 mm)\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: Parabolic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Cobalt\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\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\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: Titanium Alloy\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: DIN 1897\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 659\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.4 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: 9006590065300\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51744440615218,"sku":"9006590065300","price":54.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b589cf9239f0c01c22405784204eb8f9.jpg?v=1788856515","url":"https:\/\/voomisupply.com\/products\/guhring-9006590065300-cobalt-stub-drill-bit-0-2571in","provider":"Voomi Supply","version":"1.0","type":"link"}