{"product_id":"kennametal-4149643-taper-length-drill-bit-6-2mm-carbide","title":"Kennametal 4149643 Taper Length Drill Bit 6.2mm Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 4149643 is a taper length solid carbide drill bit from the B053A-CPG series, designed for precision drilling in demanding industrial and metalworking applications. The bit measures 6.2 mm (0.2441 inches) in diameter with a 105 mm (4 inches) overall length and a 67 mm (2.64 inches) spiral flute length. A 140-degree standard point angle delivers efficient cutting entry and reduced thrust. The TiAlN coating extends tool life in high-heat cutting environments. Coolant-through capability allows cutting fluid to reach the cutting zone directly, improving chip evacuation and thermal control. This bit is installed by machinists and tooling professionals in production and job shop settings.\u003c\/p\u003e\u003cp\u003eThe 4149643 suits taper length drilling operations where added flute length is needed beyond a jobber drill. The 8xD flute-to-diameter ratio supports deeper hole engagement. The straight cylindrical shank measures 8 mm (0.315 inches) in diameter and 36 mm (1.42 inches) in length, making it compatible with standard drill chucks and collet systems. Maximum drilling depth is 57 mm (2.24 inches). The right-hand spiral flute and tapered web configuration promote clean chip flow and centerline stability through the cut. This drill suits CNC machining centers and manual drilling setups requiring close-tolerance hole sizing.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for rigidity and wear resistance in hard and abrasive materials\u003c\/li\u003e\n\u003cli\u003eTiAlN coating for extended tool life in high-temperature cutting conditions\u003c\/li\u003e\n\u003cli\u003e140-degree standard point angle reduces thrust and improves entry accuracy\u003c\/li\u003e\n\u003cli\u003eCoolant-through design delivers fluid directly to the cutting edge for chip evacuation and heat control\u003c\/li\u003e\n\u003cli\u003e8xD flute-to-diameter ratio supports deeper hole applications\u003c\/li\u003e\n\u003cli\u003eTapered web configuration promotes centerline strength and stability\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a taper length drill bit in the B053A-CPG series, this bit fits standard straight-shank drill chucks and collet holders accepting an 8 mm shank diameter. Verify spindle and chuck capacity before installation.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by machinists and CNC tooling technicians. Ensure the machine spindle is fully stopped and locked out before loading or removing the bit. Secure the straight shank fully within the chuck or collet to the recommended engagement depth to prevent runout. When using coolant-through capability, confirm the machine spindle and toolholder are configured for internal coolant delivery before engaging the coolant supply.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: B053A-CPG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 6.2 mm (0.2441 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 140 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Standard\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: TiAlN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 67 mm (2.64 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length to Diameter Ratio\u003c\/strong\u003e: 8xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 105 mm (4 inches)\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: 8 mm (0.315 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 36 mm (1.42 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 57 mm (2.24 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Length\u003c\/strong\u003e: 1.04 mm (0.041 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: -0.015 to 0.000 mm (-0.0006 to 0.0000 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.02 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: KENNAMETAL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 4149643\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51741502243122,"sku":"4149643","price":279.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5cd08b2d5d544bfb28965121c0413198_b0a8c6eb-ad32-4649-b3ef-009748ad5969.jpg?v=1788831888","url":"https:\/\/voomisupply.com\/products\/kennametal-4149643-taper-length-drill-bit-6-2mm-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}