{"product_id":"kennametal-4151193-carbide-drill-bit-letter-u-0-368-in","title":"Kennametal 4151193 Carbide Drill Bit Letter U 0.368 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe KENNAMETAL 4151193 is a screw machine length (stub) drill bit in Letter U size, measuring 0.368 inches in diameter. It is manufactured from solid carbide and features a multilayer TiAlN coating with a TiN tip for extended tool life in demanding drilling applications. The 140-degree split point reduces thrust and improves centering accuracy at entry. With coolant-through capability and a tapered web design, this bit is built for production drilling environments where cycle time and hole quality matter. It is typically installed by machinists and toolroom technicians working on CNC machining centers or screw machines.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is suited for high-speed, short-hole drilling operations in metalworking and precision machining environments, both job shop and production floor settings. The stub-length body limits deflection and improves rigidity in applications requiring tight positional tolerances. The straight cylindrical shank seats directly into standard collets, chucks, or hydraulic toolholders. Coolant-through channels support high-pressure through-spindle coolant delivery for chip evacuation and heat management during interrupted or deep-for-diameter cuts up to 35 mm maximum drilling depth.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction for superior hardness and wear resistance in abrasive materials\u003c\/li\u003e\n  \u003cli\u003eMultilayer TiAlN coating with TiN tip for elevated heat resistance and reduced built-up edge\u003c\/li\u003e\n  \u003cli\u003e140-degree point angle improves self-centering and reduces entry thrust\u003c\/li\u003e\n  \u003cli\u003eCoolant-through design supports high-pressure spindle coolant for chip evacuation\u003c\/li\u003e\n  \u003cli\u003eStub flute length limits deflection and maximizes rigidity in short-hole applications\u003c\/li\u003e\n  \u003cli\u003eTapered web configuration adds core strength and extends tool life under high feed rates\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-specified replacement or production tooling selection for standard straight-shank collet chucks, Weldon-style holders, and hydraulic toolholders accepting a 10 mm (0.3937 inch) shank diameter. Conforms to DIN 6537K specification.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified machinist or toolroom technician. Ensure the machine spindle is fully stopped and the toolholder is clean and free of debris before seating the shank. Verify that through-spindle coolant pressure is set according to the machine tool manufacturer specifications before engaging coolant-through flow. Do not exceed the maximum drilling depth of 35 mm without retracting to clear chips.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size\u003c\/strong\u003e: Letter U (0.368 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: Multilayer TiAlN with TiN Tip\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.504 inches (89 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.85 inches (47 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 1.378 inches (35 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.3937 inches (10 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.575 inches (40 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Length\u003c\/strong\u003e: 0.0627 inches (1.59 mm)\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\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\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\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: -0.0006 to 0.0000 inches (-0.015 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: 0.16 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: 4151193\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51742742937906,"sku":"4151193","price":181.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c51c9205b74cce8e11e519b4c6955af8.jpg?v=1788839219","url":"https:\/\/voomisupply.com\/products\/kennametal-4151193-carbide-drill-bit-letter-u-0-368-in","provider":"Voomi Supply","version":"1.0","type":"link"}