{"product_id":"kennametal-4150729-carbide-jobber-drill-letter-u-0-368-in","title":"Kennametal 4150729 Carbide Jobber Drill Letter U 0.368 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe KENNAMETAL 4150729 is a solid carbide jobber-length drill bit sized to Letter U (0.3680 inches) with a 140-degree split point and a multilayer TiAlN coating. It is designed for high-performance drilling in demanding production environments where tool life and hole accuracy matter. The two-flute, right-hand spiral geometry produces clean chip evacuation in a standard spiral pattern. The straight cylindrical shank measures 0.5313 inches in diameter and seats securely in standard drill chucks or collet holders. Overall length is 4.0551 inches with a flute length of 2.4016 inches, making it well suited for moderate-depth through-hole and blind-hole applications.\u003c\/p\u003e\u003cp\u003eThis drill is intended for use in steel, stainless steel, cast iron, aluminum, and other non-ferrous materials. It is a strong fit for CNC machining centers, drill presses, and manual spindle setups in industrial, toolroom, and maintenance environments. The 5xD flute-to-diameter ratio supports depths up to 1.9291 inches without coolant-through capability, relying on chip clearance and cutting geometry to manage heat. Machinists and tool-room technicians working to DIN 6537K tolerances will find this drill meets that specification designation directly.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for rigidity and wear resistance in hard and abrasive materials\u003c\/li\u003e\n\u003cli\u003e140-degree point angle reduces thrust and improves self-centering on entry\u003c\/li\u003e\n\u003cli\u003eMultilayer TiAlN coating extends tool life in ferrous and high-temp alloy applications\u003c\/li\u003e\n\u003cli\u003eRight-hand regular spiral flute promotes consistent chip evacuation\u003c\/li\u003e\n\u003cli\u003eStraight cylindrical shank (0.5313 inches) fits standard chucks and collet systems\u003c\/li\u003e\n\u003cli\u003eConforms to DIN 6537K specification for dimensional consistency\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-use carbide jobber drill for applications in steel, stainless steel, cast iron, aluminum, and non-ferrous materials requiring a Letter U (0.3680-inch) diameter hole conforming to DIN 6537K standards.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should be performed by a qualified machinist or tool-room technician familiar with carbide tooling. Secure the straight shank fully in a properly sized chuck or collet before operation, and verify runout is within acceptable limits to avoid premature tool breakage. Carbide drills are brittle  -  do not use in setups with excessive vibration or interrupted cuts without confirming the application is appropriate for solid carbide. This tool does not support coolant-through delivery; use external coolant or cutting fluid as required by the workpiece material.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: U\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.3680 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 Bit Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Multilayer TiAlN\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Regular Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 4.0551 inches (103.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2.4016 inches (61.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 1.9291 inches (49.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.5313 inches (10 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.5748 inches (40.00 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\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 by Diameter Ratio\u003c\/strong\u003e: 5xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: -0.0006 to 0.0000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification\u003c\/strong\u003e: DIN 6537K\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel, Stainless Steel, Cast Iron, Aluminum, Non-Ferrous\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: 4150729\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51744060866866,"sku":"4150729","price":171.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/027550a92e9fb7c9c67a753ee7e2e1a8_942266a1-8b5e-4f9d-b2a5-a03a443cdc13.jpg?v=1788853755","url":"https:\/\/voomisupply.com\/products\/kennametal-4150729-carbide-jobber-drill-letter-u-0-368-in","provider":"Voomi Supply","version":"1.0","type":"link"}