{"product_id":"kennametal-4148847-screw-machine-drill-bit-2-50mm-carbide","title":"Kennametal 4148847 Screw Machine Drill Bit 2.50mm Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 4148847 is a stub-length (screw machine length) solid carbide drill bit designed for high-precision drilling in metal and hard materials. It features a 140-degree split point for accurate entry and reduced thrust, a multilayer TiAlN coating for heat and wear resistance, and coolant-through capability to extend tool life in demanding applications. The 2-flute regular spiral geometry evacuates chips efficiently at higher feed rates. With an overall length of 58.00 mm (2.28 inches) and a flute length of 17.00 mm (0.67 inches), this stub-length drill is intended for rigid, close-tolerance work on CNC machining centers and screw machines.\u003c\/p\u003e\u003cp\u003eThis drill bit is suited for production drilling operations in aerospace, automotive, and general metalworking environments. The short flute length and stubby body provide exceptional rigidity, reducing deflection when drilling small-diameter holes at high spindle speeds. The coolant-through design makes it appropriate for deep-hole relative to diameter applications and for materials that generate significant heat. Licensed machinists and CNC operators in job shops and production facilities are the primary users.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for rigidity and wear resistance in hard materials\u003c\/li\u003e\n\u003cli\u003eMultilayer TiAlN coating applied at the tip for elevated heat resistance and extended tool life\u003c\/li\u003e\n\u003cli\u003e140-degree point angle for self-centering entry and reduced walking on hard surfaces\u003c\/li\u003e\n\u003cli\u003eCoolant-through capability supports high-feed-rate and deep-drilling cycles\u003c\/li\u003e\n\u003cli\u003eTapered web configuration for strength at the core of the bit\u003c\/li\u003e\n\u003cli\u003eStraight cylindrical shank at 4.00 mm (0.1575 inches) diameter for standard collet or drill chuck mounting\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a direct-fit replacement or production drill for CNC machining centers, screw machines, and drill presses using standard straight-shank collets or chucks accepting a 4.00 mm shank diameter, conforming to DIN 6537K specification.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and tool changes should be performed by a qualified machinist with the spindle fully stopped and machine power locked out per applicable shop safety procedures. The straight cylindrical shank requires a collet or chuck sized to 4.00 mm. Verify coolant passages are clear before use if running through-coolant. Do not exceed manufacturer-recommended speeds and feeds for the workpiece material to avoid premature coating failure or bit fracture.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 2.50 mm (0.0984 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 58.00 mm (2.28 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 17.00 mm (0.67 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 12.00 mm (0.47 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 4.00 mm (0.1575 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 28.00 mm (1.10 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\u003eDrill Point Length\u003c\/strong\u003e: 0.40 mm (0.016 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute-to-Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: TiAlN (Multilayer, Tip)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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: -0.014 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\u003eSeries\u003c\/strong\u003e: B051A-CPG\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: 4148847\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51730229068082,"sku":"4148847","price":124.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/fbab35176a1c8c9c37dd327abc2bd473.jpg?v=1788713726","url":"https:\/\/voomisupply.com\/products\/kennametal-4148847-screw-machine-drill-bit-2-50mm-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}