{"product_id":"guhring-9055240035000-cobalt-stub-drill-bit-0-1378-in","title":"Guhring 9055240035000 Cobalt Stub Drill Bit 0.1378 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe GUHRING 9055240035000 is a cobalt stub-length (screw machine length) twist drill bit built for high-productivity drilling in metalworking and fabrication environments. Manufactured to DIN 1897 standards, the bit features a 3.50 mm (0.1378 inch) diameter, a 118-degree four-facet split point, and an M35 cobalt steel construction. The web-thinned, tapered web design reduces thrust force at entry, while the regular spiral flute geometry promotes efficient chip evacuation. This bit is installed and used by machinists, maintenance technicians, and metalworking professionals in production and repair settings.\u003c\/p\u003e\u003cp\u003eThe 9055240035000 is suited for drilling aluminum and similar non-ferrous workpiece materials where heat resistance and edge retention are priorities. The stub-length body — 52.00 mm overall length with a 20.00 mm flute length — provides added rigidity compared to jobber-length bits, making it a good fit for drill press, CNC, or turret lathe applications where deflection control matters. Maximum drilling depth reaches 0.5810 inches (14.75 mm) at a 3xD flute-to-diameter ratio. The straight-cylindrical shank seats cleanly in standard drill chucks and collet holders.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eM35 cobalt steel construction for elevated heat resistance and extended tool life\u003c\/li\u003e\n\u003cli\u003eFour-facet split point reduces walking and lowers entry thrust force\u003c\/li\u003e\n\u003cli\u003eWeb-thinned tapered web minimizes cutting resistance at the chisel edge\u003c\/li\u003e\n\u003cli\u003eStub-length body increases rigidity and reduces deflection in tight setups\u003c\/li\u003e\n\u003cli\u003eBright\/uncoated finish — no coating buildup to affect dimensional tolerance\u003c\/li\u003e\n\u003cli\u003eManufactured to DIN 1897 standard with diameter tolerance of +0.000 to -0.018 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a DIN 1897 stub-length replacement drill bit suitable for standard drill chucks and collet holders accepting a 3.50 mm straight-cylindrical shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by machinists or maintenance technicians. Secure the shank fully in a properly sized drill chuck or collet before operation; verify runout before beginning a production run. Always power down and lock out the machine before changing tooling. Follow applicable shop safety standards and machine manufacturer guidelines for spindle speed and feed rate selection based on workpiece material.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.1378 inches (3.50 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 52.00 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 20.00 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 0.5810 inches (14.75 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 M35\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Regular\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: 3.50 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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: 3xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: +0.000 to -0.018 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Type\u003c\/strong\u003e: Stub (Screw Machine)\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: 5524\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: 0.007 pounds\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: 9055240035000\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51728672031026,"sku":"9055240035000","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/88c7e790f862c5fc7e9a5c4d9e906ba1.jpg?v=1788694731","url":"https:\/\/voomisupply.com\/products\/guhring-9055240035000-cobalt-stub-drill-bit-0-1378-in","provider":"Voomi Supply","version":"1.0","type":"link"}