{"product_id":"kennametal-4149609-taper-length-drill-bit-wire-21","title":"Kennametal 4149609 Taper Length Drill Bit Wire 21","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe KENNAMETAL 4149609 is a solid carbide taper length drill bit in the B053A-CPG series, designed for precision drilling in demanding industrial and metalworking applications. Built to DIN 6537K specification, this wire gauge size 21 (0.1590 inches) drill features a 140-degree point angle, a multilayer TiAlN coating for extended tool life, and coolant-through capability for heat management in deep-hole operations. The 8xD flute-to-diameter ratio provides rigidity and chip evacuation efficiency in tight-tolerance work. It is installed by machinists, tool-and-die professionals, and production drilling operators on CNC and conventional equipment.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is suited for machining operations in aerospace, automotive, die-and-mold, and general metalworking environments where consistent hole quality and dimensional accuracy are required. The straight cylindrical shank seats in standard drill chucks and collet holders. The spiral flute geometry with a tapered web promotes chip flow and reduces thrust in through-hole and blind-hole applications. Coolant-through capability makes this bit particularly effective in applications where heat buildup is a concern at elevated feed rates or with difficult-to-machine materials.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction in material grade KC7325 for hardness and wear resistance\u003c\/li\u003e\n  \u003cli\u003eMultilayer TiAlN coating for high-temperature resistance and extended tool life\u003c\/li\u003e\n  \u003cli\u003e140-degree standard point angle for aggressive entry and accurate hole placement\u003c\/li\u003e\n  \u003cli\u003eCoolant-through design for heat control during deep or high-speed drilling\u003c\/li\u003e\n  \u003cli\u003eRight-hand spiral flute, regular helix, with tapered web configuration for chip evacuation\u003c\/li\u003e\n  \u003cli\u003eDIN 6537K specification for dimensional consistency and interchangeability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-use drill for standard drill chucks and collet holders accepting a 0.2362-inch straight cylindrical shank, consistent with B053A-CPG series tooling in CNC machining and production drilling setups.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified machinists or tooling technicians. Power down and lock out the spindle before seating or removing the bit from the chuck or collet. Verify shank seating depth and runout with an indicator before initiating a cut. Follow applicable machine tool manufacturer guidelines and shop safety protocols when setting feed rates and spindle speeds for the workpiece material.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: B053A-CPG\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: 21\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.1590 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\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: KC7325\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Multilayer TiAlN\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.9291 inches (49 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.4252 inches (87 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.2362 inches (6 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.4173 inches (36 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 1.6142 inches (41 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Length\u003c\/strong\u003e: 0.0261 inches (0.66 mm)\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\u003eFlute Type\u003c\/strong\u003e: Spiral, Regular Helix\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\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\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: -0.0005 to 0.0000 inches (-0.012 to 0.000 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecification\u003c\/strong\u003e: DIN 6537K\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.05 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: KENNAMETAL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 4149609\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51742397071666,"sku":"4149609","price":222.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5cd08b2d5d544bfb28965121c0413198_1a78d1e6-5261-49c5-a383-e39ae7784df8.jpg?v=1788837195","url":"https:\/\/voomisupply.com\/products\/kennametal-4149609-taper-length-drill-bit-wire-21","provider":"Voomi Supply","version":"1.0","type":"link"}