{"product_id":"kennametal-4150246-screw-machine-drill-bit-7-50mm-carbide","title":"Kennametal 4150246 Screw Machine Drill Bit 7.50mm Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe KENNAMETAL 4150246 is a solid carbide screw machine length (stub) drill bit designed for precise, high-performance drilling in metal and hard-material applications. Built to DIN 6537K standards, it features a 140-degree split point for reduced thrust and accurate positioning without center punching. The multilayer TiAlN coating on the tip extends tool life in demanding production environments. At 79 millimeters overall length with a 7.50 mm cutting diameter, this right-hand spiral flute bit is sized for CNC machining centers, drill presses, and automated screw machine operations where stub-length rigidity and hole accuracy are critical.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is suited for high-volume production drilling in ferrous and non-ferrous metals, cast iron, and similar hard materials. The stub length and straight cylindrical shank make it a practical choice for close-tolerance work in machining cells where minimizing deflection and maintaining positional accuracy are priorities. It is installed and operated by machinists, tool and die technicians, and CNC setup professionals working in job shops and production manufacturing environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e7.50 mm cutting diameter with a tolerance of -0.015 to 0.000 mm for close-tolerance hole sizing\u003c\/li\u003e\n  \u003cli\u003e140-degree standard point angle reduces entry thrust and improves self-centering\u003c\/li\u003e\n  \u003cli\u003eSolid carbide construction provides rigidity and wear resistance over high cycle counts\u003c\/li\u003e\n  \u003cli\u003eTiAlN tip coating extends cutting life in abrasive and heat-intensive applications\u003c\/li\u003e\n  \u003cli\u003eStub (screw machine) length with 3xD flute-to-diameter ratio maximizes rigidity and minimizes deflection\u003c\/li\u003e\n  \u003cli\u003eStraight cylindrical 8.00 mm shank fits standard drill chucks and toolholders without special adapters\u003c\/li\u003e\n  \u003cli\u003eComplies with DIN 6537K specification for dimensional and geometric consistency\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct tooling selection within the KENNAMETAL B041A-CPG series, suitable for drill presses, CNC machining centers, and screw machines accepting a straight cylindrical shank of 8.00 mm diameter.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by a qualified machinist or CNC technician. Always power down and lock out the machine spindle before inserting or removing the bit from the toolholder or chuck. Ensure the shank is fully seated and the chuck or collet is properly torqued to the machine manufacturer's specification before operation. Solid carbide tooling is brittle — avoid side loading, interrupted cuts without appropriate feed rate adjustment, and contact with hard fixtures during setup.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 7.50 mm (0.2953 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 79.00 mm (3.1102 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 41.00 mm (1.6142 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 29.00 mm (1.1417 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 8.00 mm (0.3150 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 36.00 mm (1.4173 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Length\u003c\/strong\u003e: 1.27 mm (0.0499 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\u003eCoating\u003c\/strong\u003e: TiAlN (Tip)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\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\u003eWeb Configuration\u003c\/strong\u003e: Tapered\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute-to-Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Stub (Screw Machine)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: -0.015 to 0.000 mm (-0.0006 to 0.0000 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecification\u003c\/strong\u003e: DIN 6537K\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\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: 0.03 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: 4150246\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51730947375410,"sku":"4150246","price":117.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/027550a92e9fb7c9c67a753ee7e2e1a8_216b5403-cbfc-40fd-945f-a948da907405.jpg?v=1788725174","url":"https:\/\/voomisupply.com\/products\/kennametal-4150246-screw-machine-drill-bit-7-50mm-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}