{"product_id":"guhring-9006590127000-1-2-in-cobalt-stub-drill-bit","title":"Guhring 9006590127000 1\/2 in Cobalt Stub Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe GUHRING 9006590127000 is a cobalt screw machine length (stub) drill bit engineered for high-performance drilling in difficult-to-machine materials. Built to DIN 1897 standards, it features a 130-degree split point with web thinning for fast penetration and reduced walking on entry. The parabolic flute geometry promotes efficient chip evacuation, keeping the cutting zone clear during extended cuts. At 0.5 inches in diameter with a straight-cylindrical shank of matching diameter, this bit installs directly into standard drill chucks or collet holders without adapters. Weighing 0.1 pounds, it is compact enough for tight-access applications while maintaining the rigidity expected of heavy-duty cobalt tooling.\u003c\/p\u003e\u003cp\u003eThis bit is rated for drilling titanium alloy as its primary workpiece material, making it well-suited for aerospace maintenance, fabrication shops, and industrial production environments where conventional high-speed steel tooling falls short. The stub-length body limits deflection on short-reach applications, and the parallel web configuration provides consistent support across the cutting edge. Machinists and tool-and-die professionals working with hardened or high-tensile materials will find this Series 659 bit a direct fit for demanding production drilling cycles.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eCobalt construction rated for heavy-duty drilling in titanium alloy and other hard materials\u003c\/li\u003e\n\u003cli\u003e130-degree drill point angle with web thinning for self-centering entry and reduced thrust\u003c\/li\u003e\n\u003cli\u003eParabolic flute design for aggressive chip evacuation in deep-hole applications\u003c\/li\u003e\n\u003cli\u003eStub length body minimizes deflection and maximizes rigidity in short-reach setups\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank fits standard drill chucks and collet systems without adapters\u003c\/li\u003e\n\u003cli\u003eManufactured to DIN 1897 specification for consistent dimensional tolerancing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct addition for Series 659 stub-length cobalt drill bit applications conforming to DIN 1897. Compatible with any drill press, CNC machining center, or hand drill equipped with a 1\/2-inch or larger chuck capable of accepting a straight-cylindrical shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and operation should be performed by qualified machinists or tool technicians familiar with metal-cutting applications. Ensure the machine spindle is fully stopped and locked out before changing tooling. Secure the shank fully in the chuck or collet to the manufacturer-recommended engagement depth to prevent pullout under load. Do not exceed the maximum drilling depth of 1.258 inches in a single pass without retracting to clear chips, particularly when drilling titanium alloy or other gummy metals.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4.016 inches (102 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2.008 inches (51 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.5 inches (12.70 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 2.008 inches (51 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 1.258 inches (31.95 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 130 degrees\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\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\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\u003ePoint Type\u003c\/strong\u003e: Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Titanium Alloy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Type\u003c\/strong\u003e: Stub (Screw Machine Length)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: +0.000 to -0.027 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 659\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: 0.1 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: 9006590127000\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GUHRING","offers":[{"title":"Default Title","offer_id":51743924617522,"sku":"9006590127000","price":122.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1d4c20df8a678ac713cde1ebc93d5d05.jpg?v=1788851371","url":"https:\/\/voomisupply.com\/products\/guhring-9006590127000-1-2-in-cobalt-stub-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}