{"product_id":"kennametal-4151650-screw-machine-drill-bit-2-50mm-carbide","title":"Kennametal 4151650 Screw Machine Drill Bit 2.50mm Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe KENNAMETAL 4151650 is a screw machine length (stub) drill bit engineered for precision drilling in metalworking and machining applications. Built from solid carbide and finished with a multilayer TiAlN coating at the tip, it delivers extended tool life and resistance to heat buildup at the cutting zone. The 140-degree split point reduces thrust force and improves centering accuracy without a pilot hole. At 58.00 mm overall length (2.28 inches), this bit is sized for use in CNC machining centers, drill presses, and screw machine setups where rigidity and hole-to-hole repeatability are critical. It is installed and serviced by machinists, toolroom technicians, and CNC operators.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is suited for close-tolerance drilling in ferrous metals, cast iron, and similar hard materials where a stub-length geometry minimizes deflection. The right-hand spiral flute configuration handles standard rotational setups. The straight cylindrical shank at 4.00 mm diameter seats directly into collet chucks and drill chucks without adapters. Series B041A-CPG follows DIN 6537K specification, making it a standard-compliant option for shops working to metric tooling standards. Maximum drilling depth is 12.00 mm (0.47 inches).\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction for rigidity and wear resistance in hard-material drilling\u003c\/li\u003e\n  \u003cli\u003eMultilayer TiAlN coating at the tip reduces thermal wear and extends cutting life\u003c\/li\u003e\n  \u003cli\u003e140-degree point angle improves self-centering and reduces walking on entry\u003c\/li\u003e\n  \u003cli\u003eStub length (screw machine length) minimizes deflection in short-reach applications\u003c\/li\u003e\n  \u003cli\u003eStraight cylindrical shank compatible with standard collet and drill chuck systems\u003c\/li\u003e\n  \u003cli\u003eConforms to DIN 6537K specification for metric tooling standardization\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a DIN 6537K-compliant stub-length drill bit for use in CNC machining centers, drill presses, and screw machines equipped with collet or drill chuck toolholding rated for a 4.00 mm straight shank.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified machinists or CNC toolroom technicians. Ensure the machine spindle is fully stopped and the tool changer or chuck is locked before inserting or removing the bit. Seat the straight shank fully into the collet or chuck and confirm runout with a dial indicator before production drilling. Solid carbide tooling is brittle and should not be used in setups with excessive vibration or interrupted cuts unless the application is confirmed suitable.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\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 (0.6693 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 Length\u003c\/strong\u003e: 0.40 mm (0.0157 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\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\u003ePoint Type\u003c\/strong\u003e: Standard\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 (Tip)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: -0.014 to 0.000 mm (-0.0006 to 0.0000 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Stub (Screw Machine Length)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: B041A-CPG\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: 0.02 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: 4151650\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51731975733554,"sku":"4151650","price":99.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e56fdada29bf621cec2051cee032c670.jpg?v=1788737488","url":"https:\/\/voomisupply.com\/products\/kennametal-4151650-screw-machine-drill-bit-2-50mm-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}