{"product_id":"accupro-a-6120039r-micro-drill-bit-0-39-mm-solid-carbide","title":"Accupro A-6120039R Micro Drill Bit 0.39 Mm Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe ACCUPRO A-6120039R is a solid carbide micro drill bit designed for precision drilling in tight-tolerance applications. With a 0.39 mm (0.0154 inch) diameter and a 120-degree point angle, this bit delivers accurate, repeatable entry in small-diameter hole work. The bright, uncoated finish keeps the cutting geometry clean and predictable. At 25 mm overall length with a 2 mm flute length and a 1.00 mm straight-cylindrical shank, the A-6120039R fits standard miniature drill chucks used in precision machining environments. The spiral, regular-helix flute design promotes chip evacuation from shallow micro holes. This bit is intended for machinists and toolmakers working with precision drilling equipment.\u003c\/p\u003e\u003cp\u003eThe A-6120039R is suited for precision micro-drilling operations in metalworking, electronics manufacturing, and instrument fabrication. The straight-cylindrical shank allows seating in collet chucks and precision drill chucks commonly found on CNC drilling centers, drill presses, and micro-machining stations. The 120-degree standard point angle is appropriate for general-purpose micro-hole work in a variety of workpiece materials. Right-hand cutting direction is standard for conventional drill-press and CNC spindle rotation.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e0.39 mm (0.0154 inch) diameter for tight-tolerance micro-drilling\u003c\/li\u003e\n\u003cli\u003eSolid carbide construction provides rigidity and wear resistance at small diameters\u003c\/li\u003e\n\u003cli\u003e120-degree standard point angle for accurate hole entry\u003c\/li\u003e\n\u003cli\u003eSpiral regular-helix flute promotes chip evacuation in shallow micro holes\u003c\/li\u003e\n\u003cli\u003e1.00 mm straight-cylindrical shank fits standard miniature collet and drill chucks\u003c\/li\u003e\n\u003cli\u003eBright, uncoated finish — no coating buildup at the cutting edge\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style miniature drill bit for use in precision collet chucks and drill chucks accepting a 1.00 mm straight-cylindrical shank, typical of CNC drilling centers and micro-machining stations.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist or toolmaker familiar with micro-drill handling. Secure the shank fully in the collet or chuck before operation and verify runout with a dial indicator when tolerances are critical. Micro drills are brittle at this diameter — avoid side loading and use appropriate feed rates for the workpiece material. Never apply force to seat the bit; seating should be achieved by proper collet or chuck tightening only.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.39 mm (0.0154 inch)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 25 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 1.00 mm\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\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\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\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\u003eMinimum Order Quantity\u003c\/strong\u003e: 10\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.25 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241600\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-6120039R\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51733612495154,"sku":"A-6120039R","price":232.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6ea2357f5d1a3f2d629bb230675f3448.jpg?v=1788756913","url":"https:\/\/voomisupply.com\/products\/accupro-a-6120039r-micro-drill-bit-0-39-mm-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}