{"product_id":"accupro-77712289-carbide-jobber-drill-bit-3-mm-altin","title":"Accupro 77712289 Carbide Jobber Drill Bit 3 Mm Altin","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ACCUPRO 77712289 is a solid carbide jobber-length drill bit designed for high-performance drilling in hard and abrasive materials. Ground to a 140-degree split point with web thinning, it starts on contact without a center punch and reduces thrust in tough substrates. The AlTiN coating extends tool life in high-heat applications by providing oxidation resistance and surface hardness. At 3 mm in diameter with a 68 mm overall length and 18.80 mm flute length, this bit suits precision drilling tasks where tight tolerances and consistent hole quality are required. A right-hand spiral flute with regular helix clears chips efficiently during through-hole and blind-hole operations. Coolant-through capability makes it compatible with machine tools equipped with internal coolant delivery.\u003c\/p\u003e\n\u003cp\u003eThis bit is built for machining centers, CNC drill presses, and manual mills used in metalworking, mold and die, aerospace component, and general precision machining environments. The straight-cylindrical shank fits standard drill chucks and collet holders in the 3 mm range. The 5xD flute-to-diameter ratio and tapered web configuration make it well suited for stainless steel, hardened steel, cast iron, titanium, and other difficult-to-machine alloys where carbide substrate and AlTiN coating outperform high-speed steel tooling. The diameter tolerance of -0.0005 to 0.0000 inches supports close-tolerance work where hole size accuracy is critical.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide substrate for rigidity and wear resistance in hard materials\u003c\/li\u003e\n  \u003cli\u003eAlTiN coating provides high oxidation resistance and extended tool life in high-temperature drilling\u003c\/li\u003e\n  \u003cli\u003e140-degree standard point with web thinning reduces walking and entry thrust\u003c\/li\u003e\n  \u003cli\u003eCoolant-through design compatible with through-spindle coolant delivery systems\u003c\/li\u003e\n  \u003cli\u003eRight-hand, 2-flute spiral geometry promotes efficient chip evacuation\u003c\/li\u003e\n  \u003cli\u003eDiameter tolerance of -0.0005 to 0.0000 inches supports close-tolerance hole requirements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a replacement or production-run jobber drill bit for CNC machining centers, drill presses, and manual mills accepting straight-cylindrical shank tooling in the 3 mm diameter range.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and operation of carbide drill bits should be performed by qualified machinists familiar with cutting tool setup and machine tool operation. Secure the shank fully in the collet or drill chuck and verify runout before beginning a drilling cycle. Carbide tooling is brittle and susceptible to breakage from side loading or interrupted cuts at incorrect feeds and speeds — consult tooling manufacturer cut data for the workpiece material. When using coolant-through capability, confirm coolant pressure and flow rate are matched to the machine spindle specifications.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 3 mm (0.1181 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 68 mm (2.677 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 18.80 mm (0.740 inches)\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\u003eDrill Point Angle\u003c\/strong\u003e: 140 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: Spiral, Regular Helix\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 5xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: AlTiN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 0.5910 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: -0.0005 to 0.0000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.09 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241634\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: 77712289\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCUPRO","offers":[{"title":"Default Title","offer_id":51728186736946,"sku":"77712289","price":85.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/62cc47e76d0df01236050e4041166cb1.jpg?v=1788689178","url":"https:\/\/voomisupply.com\/products\/accupro-77712289-carbide-jobber-drill-bit-3-mm-altin","provider":"Voomi Supply","version":"1.0","type":"link"}