{"product_id":"kennametal-4150321-carbide-drill-bit-12-90mm-140deg","title":"Kennametal 4150321 Carbide Drill Bit 12.90mm 140deg","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 4150321 is a stub-length (screw machine length) drill bit engineered for precision drilling in demanding metalworking applications. Built from solid carbide with a multilayer TiAlN coating at the tip, this bit delivers extended tool life and heat resistance in high-speed drilling operations. The 140-degree split point promotes accurate positioning and reduces thrust requirements at entry. With an overall length of 4.2126 inches (107 mm) and a 12.90 mm cutting diameter, it is sized for production environments where rigidity and hole quality are critical. Machinists, tool-and-die shops, and CNC operators are the primary users of this series.\u003c\/p\u003e\u003cp\u003eThis drill bit is intended for stub-length drilling applications where shorter flute length provides added rigidity and reduced deflection. The B041A-CPG series is designed for use in CNC machining centers and screw machine setups where consistent hole diameter tolerances are required. With a flute-to-diameter ratio of 3xD and a maximum drilling depth of 1.6929 inches (43 mm), it is suited for moderate-depth holes in ferrous and non-ferrous materials. Right-hand cutting direction is standard. The straight cylindrical shank fits conventional collet chucks and drill holders.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for rigidity and wear resistance in production drilling\u003c\/li\u003e\n\u003cli\u003eTiAlN multilayer coating at the tip reduces heat buildup and extends cutting life\u003c\/li\u003e\n\u003cli\u003e140-degree point angle improves self-centering and lowers entry thrust\u003c\/li\u003e\n\u003cli\u003eStub length (screw machine length) design minimizes deflection in short-hole applications\u003c\/li\u003e\n\u003cli\u003eTapered web configuration adds core strength behind the cutting edge\u003c\/li\u003e\n\u003cli\u003eDIN 6537K specification compliance ensures dimensional consistency\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-fit drill bit for CNC machining centers and screw machine setups accepting a 14.00 mm straight cylindrical shank, within the B041A-CPG series covering the 11.00 mm to 13.50 mm diameter range.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by qualified machinists or tooling technicians. Ensure the machine spindle is fully stopped and locked out before changing tooling. Verify collet or chuck bore matches the 14.00 mm shank diameter before seating. Follow the machine tool manufacturer's recommended speeds and feeds for the workpiece material; do not exceed rated RPM for this diameter class.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Diameter\u003c\/strong\u003e: 12.90 mm (0.5079 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 107.00 mm (4.2126 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 60.00 mm (2.3622 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 14.00 mm (0.5512 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 45.00 mm (1.7717 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 43.00 mm (1.6929 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: 2.22 mm (0.0874 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: TiAlN Multilayer (TiN Tip)\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\u003eWeb Configuration\u003c\/strong\u003e: Tapered\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\u003eFlute-to-Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: -0.018 to 0.000 mm (-0.0007 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\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\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: 4150321\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51730077942066,"sku":"4150321","price":238.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/027550a92e9fb7c9c67a753ee7e2e1a8_f1954c16-b8d4-4d89-9beb-43c1f57b4eb0.jpg?v=1788711366","url":"https:\/\/voomisupply.com\/products\/kennametal-4150321-carbide-drill-bit-12-90mm-140deg","provider":"Voomi Supply","version":"1.0","type":"link"}