{"product_id":"accupro-a-6120041r-micro-drill-bit-no-78-0-0161-in","title":"Accupro A-6120041R Micro Drill Bit No. 78 0.0161 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ACCUPRO A-6120041R is a solid carbide micro drill bit designed for precision drilling in miniature and tight-tolerance applications. Ground to wire gauge size No. 78 with a decimal diameter of 0.0161 inches, this bit features a 120-degree drill point angle and a spiral flute configuration for consistent chip evacuation. The straight cylindrical shank measures 1.00 mm in diameter, and the overall length is 25.00 mm. Bright and uncoated, it is suited for use in materials where a coated surface would not provide additional benefit. Right-hand cutting direction follows standard CNC and manual drill press conventions. Machinists and tool-and-die professionals are the primary installers.\u003c\/p\u003e\n\u003cp\u003eThis micro drill bit is used in precision machining environments where very small hole diameters are required. Typical applications include printed circuit board drilling, instrument manufacturing, watchmaking, medical device fabrication, and fine metalwork. The miniature series designation indicates it is engineered for controlled, low-feed-rate operations on bench-top mills, CNC machining centers, and precision drill presses. It is not intended for heavy-duty production drilling or impact-style driving. Coolant-through capability is not included, so external or flood coolant methods apply where needed.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction provides rigidity and wear resistance at very small diameters\u003c\/li\u003e\n  \u003cli\u003eWire gauge size No. 78 at 0.0161 inch decimal diameter for tight-tolerance hole requirements\u003c\/li\u003e\n  \u003cli\u003e120-degree drill point angle suited for standard through-hole and blind-hole drilling\u003c\/li\u003e\n  \u003cli\u003eSpiral flute type with regular spiral for reliable chip evacuation in miniature bores\u003c\/li\u003e\n  \u003cli\u003eBright and uncoated finish for direct use without surface interaction concerns\u003c\/li\u003e\n  \u003cli\u003eStraight cylindrical shank at 1.00 mm diameter for secure collet or chuck retention\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a miniature-series replacement or stock drill bit for precision machining setups requiring a No. 78 wire gauge diameter. Fits standard collets and drill chucks rated for a 1.00 mm shank diameter on CNC machining centers, bench mills, and precision drill presses.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and use should be performed by qualified machinists familiar with micro-diameter tooling. Secure the shank in a collet or precision drill chuck rated for 1.00 mm shank diameter before operation; avoid side-loading the bit, as solid carbide is brittle at this diameter. Spindle runout should be minimized to prevent bit deflection or breakage. Always bring the machine to a full stop before changing or inspecting the tool.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire Gauge)\u003c\/strong\u003e: No. 78\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.0161 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: Bright\/Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 120 degrees\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: 25.00 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2.00 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\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: 1.00 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Standard\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: Miniature\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.25 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: ACCUPRO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: A-6120041R\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51728686547250,"sku":"A-6120041R","price":197.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/86706a67c64c26038ed21e3368f511b0_5489fb2b-e2be-4c25-9612-de740d2e0661.jpg?v=1788695012","url":"https:\/\/voomisupply.com\/products\/accupro-a-6120041r-micro-drill-bit-no-78-0-0161-in","provider":"Voomi Supply","version":"1.0","type":"link"}