{"product_id":"kennametal-4149255-jobber-drill-bit-8-20mm-solid-carbide","title":"Kennametal 4149255 Jobber Drill Bit 8.20mm Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe KENNAMETAL 4149255 is a solid carbide jobber length drill bit designed for high-performance drilling in demanding industrial and metalworking applications. It measures 8.20 mm (0.3228 inches) in diameter with a 140-degree drill point angle and a titanium nitride (TiN) coating for extended tool life. The overall length is 103.00 mm (4.0551 inches), with a flute length of 61.00 mm (2.4016 inches) and a straight shank diameter of 10 mm (0.3750 inches). The 5xD flute-to-diameter ratio and right-hand, regular spiral flute geometry support efficient chip evacuation and consistent hole quality. This bit is suited for machinists and tooling professionals running production or precision drilling operations.\u003c\/p\u003e\n\u003cp\u003eThe 4149255 is engineered for use in steel, stainless steel, cast iron, aluminum, and other non-ferrous materials. Its coolant-through design makes it well suited for CNC machining centers and drill presses where through-tool coolant delivery is available, helping to manage heat and extend tool life in deep-hole or high-cycle applications. The maximum drilling depth is 49.00 mm (1.9291 inches). The tapered web configuration adds rigidity at the cutting zone, which helps reduce deflection when entering hard materials.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction for hardness and wear resistance in ferrous and non-ferrous materials\u003c\/li\u003e\n  \u003cli\u003eTiN coating reduces friction and extends cutting life\u003c\/li\u003e\n  \u003cli\u003e140-degree split point angle supports accurate starting without center punching\u003c\/li\u003e\n  \u003cli\u003eCoolant-through design compatible with through-tool coolant delivery systems\u003c\/li\u003e\n  \u003cli\u003eRegular spiral flute geometry promotes reliable chip evacuation\u003c\/li\u003e\n  \u003cli\u003eConforms to DIN 6537K specification for dimensional consistency\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a jobber length drill bit per DIN 6537K specification, suitable for use in CNC machining centers, drill presses, and similar equipment that accept a straight shank with a 10 mm (0.3750 inch) shank diameter. Primary workpiece materials include steel, stainless steel, cast iron, aluminum, and non-ferrous alloys.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and operation of this drill bit should be performed by qualified machinists or tooling technicians familiar with cutting tool setup and machine safety. Ensure the machine spindle is fully stopped and the tool holder or chuck is clean and undamaged before seating the shank. Confirm the collet or chuck is rated for the 10 mm shank diameter and that the holding torque meets the machine manufacturer recommendations. When using the coolant-through feature, verify coolant pressure and flow rate are within the machine and tool specifications before beginning a cut.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 8.20 mm (0.3228 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 103.00 mm (4.0551 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 61.00 mm (2.4016 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 49.00 mm (1.9291 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 10 mm (0.3750 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 40 mm (1.5748 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Length\u003c\/strong\u003e: 1.39 mm (0.0547 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\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Regular Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute By Diameter Ratio\u003c\/strong\u003e: 5xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight\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\u003ePoint Type\u003c\/strong\u003e: Standard\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiN (Titanium Nitride)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: High Performance\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: -0.0006 to 0.0000 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size Range\u003c\/strong\u003e: 0.3000 - 0.3500 inches (8.00 - 9.00 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecification\u003c\/strong\u003e: DIN 6537K\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241634\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Weight\u003c\/strong\u003e: 0.04 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 4149255\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51742792974642,"sku":"4149255","price":197.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6047723244c39e297ff48cf30f8b8e5b_29b40870-c97b-4b73-a4ee-1a8989364158.jpg?v=1788839433","url":"https:\/\/voomisupply.com\/products\/kennametal-4149255-jobber-drill-bit-8-20mm-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}