{"product_id":"harvey-tool-20091-c3-micro-drill-bit-0-0091-in-carbide","title":"Harvey Tool 20091-C3 Micro Drill Bit 0.0091 in Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HARVEY TOOL 20091-C3 is a solid carbide micro drill bit designed for precision drilling in tight-tolerance applications. Ground to a wire gauge size of 89, this bit cuts a hole diameter of 0.0091 inches with a 130-degree drill point angle suited for harder workpiece materials. The AlTiN coating improves surface hardness and heat resistance, extending tool life in demanding cuts. With a 1.5000-inch overall length and a 1\/8-inch shank diameter, it fits standard miniature drill chucks and collet systems. Spiral flutes clear chips efficiently at these small diameters. Right-hand cutting direction is standard for conventional drilling setups.\u003c\/p\u003e\n\u003cp\u003eThis micro drill bit is used in precision machining environments where very small hole diameters are required — printed circuit board drilling, watchmaking fixtures, medical device components, mold and die work, and other applications where a standard jobber drill cannot reach the required size. It belongs to the Harvey Tool Miniature Drills series, which targets machinists and tool-and-die professionals working on CNC mills, drill presses, and high-speed spindles. The 0.0160-inch flute length keeps deflection low at this diameter.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eWire size 89 cutting diameter of 0.0091 inches for ultra-small hole applications\u003c\/li\u003e\n  \u003cli\u003eSolid carbide construction provides rigidity and wear resistance at miniature scales\u003c\/li\u003e\n  \u003cli\u003eAlTiN coating adds heat and oxidation resistance for harder materials and higher speeds\u003c\/li\u003e\n  \u003cli\u003e130-degree drill point angle reduces thrust and suits harder workpiece materials\u003c\/li\u003e\n  \u003cli\u003eSpiral flute geometry promotes chip evacuation in deep micro holes\u003c\/li\u003e\n  \u003cli\u003e1\/8-inch shank diameter fits common miniature drill chucks and ER collets\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in CNC machining centers, manual drill presses, and high-speed spindles accepting a 1\/8-inch shank. Fits standard ER collet systems and miniature drill chucks compatible with that shank size.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and use of micro drill bits at this diameter should be performed by experienced machinists familiar with miniature tooling practices. Ensure the spindle and workpiece holding system are properly trammed and free of runout before drilling, as even minor misalignment will break a bit of this diameter. Power down and lock out the machine before changing or inspecting tooling. Do not exceed manufacturer-recommended spindle speeds and feed rates for the workpiece material and coating type.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: 89\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal)\u003c\/strong\u003e: 0.0091 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: AlTiN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 130 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 0.1600 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.5000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.125 inches (1\/8 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Miniature Drills\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: HARVEY TOOL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 20091-C3\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HARVEY TOOL","offers":[{"title":"Default Title","offer_id":51752195850546,"sku":"20091-C3","price":48.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/359e640565fe94dcfe38c070c34c85c9_864d457e-d902-4020-b946-e311a697a075.jpg?v=1788926496","url":"https:\/\/voomisupply.com\/products\/harvey-tool-20091-c3-micro-drill-bit-0-0091-in-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}