{"product_id":"kennametal-4151647-screw-machine-drill-bit-2-40mm-carbide","title":"Kennametal 4151647 Screw Machine Drill Bit 2.40mm Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe KENNAMETAL 4151647 is a stub-length (screw machine length) twist drill bit designed for precision hole-making in metalworking and machining applications. Built from solid carbide with a multilayer TiAlN coating, this bit delivers high heat resistance and extended tool life in demanding cutting operations. The 140-degree split point reduces thrust force and improves self-centering on entry. At 2.2835 inches overall length with a 0.6693-inch flute length, it is optimized for short, rigid setups in CNC machines, drill presses, and automatic screw machines. A tapered web configuration adds rigidity and chip evacuation efficiency throughout the cut.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is suited for high-production machining environments where short tool projection and rigidity are critical. It performs in ferrous and non-ferrous metals, including steel alloys, cast iron, and aluminum, where TiAlN coatings are standard. Typical installations involve CNC machining centers, turret lathes, and automatic screw machines where close-tolerance hole diameter control is required. The straight-cylindrical shank at 4.00 mm (0.1575 inches) fits standard collets and drill chucks common in precision machine tool setups. Maximum drilling depth is rated at 12.00 mm (0.4724 inches), consistent with the 3xD flute-by-diameter ratio of the B041A-CPG series.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction for rigidity and long tool life in high-cycle machining\u003c\/li\u003e\n  \u003cli\u003eTiAlN coating at the tip provides heat resistance and reduced built-up edge in ferrous materials\u003c\/li\u003e\n  \u003cli\u003e140-degree point angle improves self-centering and reduces thrust on entry\u003c\/li\u003e\n  \u003cli\u003eTapered web design enhances chip evacuation and core strength\u003c\/li\u003e\n  \u003cli\u003eStub flute length (17.00 mm) maximizes rigidity in short-projection setups\u003c\/li\u003e\n  \u003cli\u003eMeets DIN 6537K specification for dimensional consistency and interchangeability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003ePart of the KENNAMETAL B041A-CPG series, designed for use in standard straight-shank collet chucks and drill chucks accepting a 4.00 mm shank diameter. Dimensioned to DIN 6537K specification.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and tool changes must be performed with the machine fully powered down and spindle locked. Ensure the collet or chuck is clean and free of chips before seating the shank. Solid carbide tooling is brittle — avoid side-loading or using in hand-held drilling equipment. Verify runout with an indicator after installation; excessive runout accelerates premature tool failure in tight-tolerance applications.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 2.40 mm (0.0945 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 58.00 mm (2.2835 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 (0.4724 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 (1.1024 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: 0.38 mm (0.0150 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 Type\u003c\/strong\u003e: Regular Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\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\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\u003ePoint Type\u003c\/strong\u003e: Standard\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: -0.0006 to 0.0000 inches (-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: B041A-CPG\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: 4151647\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51736268046642,"sku":"4151647","price":94.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/9d2872047b3c93d9661f2043417d3f07.jpg?v=1788776848","url":"https:\/\/voomisupply.com\/products\/kennametal-4151647-screw-machine-drill-bit-2-40mm-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}