{"product_id":"accupro-a-6120221r-micro-drill-bit-2-21-mm-solid-carbide","title":"Accupro A-6120221R Micro Drill Bit 2.21 Mm Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO A-6120221R is a solid carbide micro drill bit designed for precision drilling in tight-tolerance applications. It features a 2.21 mm (0.0870 inch) cutting diameter, a 120-degree standard point angle, and a bright uncoated finish. The spiral flute geometry promotes efficient chip evacuation during operation. With an overall length of 38 mm and a 3 mm straight-cylindrical shank, this bit fits standard collet chucks and drill chucks sized for miniature tooling. Solid carbide construction provides rigidity and wear resistance, making it suitable for drilling hard materials where high-speed steel tooling would deflect or wear prematurely.\u003c\/p\u003e\u003cp\u003eThis micro drill bit is built for precision machining environments including CNC machining centers, drill presses, and manual machines equipped for small-diameter work. It suits applications in electronics manufacturing, medical device fabrication, aerospace component machining, and general precision metalworking. Right-hand cutting direction is standard for conventional spindle operation. The miniature series designation indicates suitability for small-bore, fine-detail drilling tasks where dimensional accuracy is critical.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e2.21 mm (0.0870 inch) cutting diameter for fine-tolerance bore work\u003c\/li\u003e\n\u003cli\u003e120-degree standard point angle for accurate entry and reduced walking\u003c\/li\u003e\n\u003cli\u003eSolid carbide construction for rigidity and extended tool life\u003c\/li\u003e\n\u003cli\u003eBright uncoated finish suitable for a wide range of workpiece materials\u003c\/li\u003e\n\u003cli\u003eSpiral flute with regular helix promotes chip clearance\u003c\/li\u003e\n\u003cli\u003e3 mm straight-cylindrical shank fits standard miniature collet systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in collet chucks, keyless drill chucks, and precision toolholders accepting a 3 mm straight shank, as commonly found on CNC machining centers and precision drill presses configured for miniature tooling.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should be performed by machinists or tooling technicians familiar with small-diameter carbide tooling. Carbide is brittle — avoid side-loading, interrupted cuts without appropriate feed reduction, or excessive runout in the toolholder, as any of these conditions can cause tool fracture. Verify spindle runout is within acceptable limits before running small-diameter carbide bits. Always bring the spindle to a full stop before changing or inspecting tooling.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 2.21 mm (0.0870 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 120 degrees\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\u003eOverall Length\u003c\/strong\u003e: 38 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 12 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\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\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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\u003eWeight\u003c\/strong\u003e: 0.25 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: ACCUPRO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: A-6120221R\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51729065410866,"sku":"A-6120221R","price":291.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/7dedb6b371191540cdda08302282dbc4.jpg?v=1788699463","url":"https:\/\/voomisupply.com\/products\/accupro-a-6120221r-micro-drill-bit-2-21-mm-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}