{"product_id":"kennametal-5990937-solid-carbide-jobber-drill-letter-f","title":"Kennametal 5990937 Solid Carbide Jobber Drill Letter F","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe KENNAMETAL 5990937 is a solid carbide jobber-length drill bit sized to Letter F (0.2570 inches) with a 135-degree split-point geometry. It is designed for precision hole-making in aluminum and non-ferrous materials at production volumes. The 135-degree point reduces walking at entry and minimizes burring at exit. Built from solid carbide in a bright\/uncoated finish, this drill delivers the rigidity and wear resistance that machinists and tool-room technicians require when drilling non-ferrous alloys. Coolant-through capability supports high-speed, deep-hole applications where chip evacuation and heat management are critical.\u003c\/p\u003e\n\u003cp\u003eThis drill is suited to CNC machining centers, drill presses, and manual machine-shop setups where Letter F diameter holes are required in aluminum, copper, brass, and similar non-ferrous workpiece materials. The 3-flat shank (8 mm shank diameter) prevents rotation in the chuck and is compatible with standard collet and keyless chuck systems. With a 5xD flute-to-diameter ratio and a 53 mm flute length, it handles moderate-depth bores cleanly. Installation and operation are performed by machinists and tool-and-die professionals in metalworking environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction provides rigidity and extended tool life in non-ferrous applications\u003c\/li\u003e\n  \u003cli\u003e135-degree split-point geometry reduces entry walking and exit burr formation\u003c\/li\u003e\n  \u003cli\u003eCoolant-through design supports chip evacuation and heat control at depth\u003c\/li\u003e\n  \u003cli\u003e3-flat shank (8 mm diameter) prevents chuck slippage during high-torque drilling\u003c\/li\u003e\n  \u003cli\u003eBright\/uncoated finish optimized for aluminum and non-ferrous workpiece materials\u003c\/li\u003e\n  \u003cli\u003eTight diameter tolerance of 0.0002 to 0.0008 inches ensures consistent hole sizing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in aluminum and non-ferrous workpiece materials. The 3-flat shank is compatible with standard collet chucks and keyless chuck systems that accept an 8 mm shank. Intended for CNC and manual machining setups requiring a Letter F (0.2570 inch) bore diameter.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and tool changes must be performed with the machine powered down and in a locked-out state per applicable shop safety procedures. Seat the 3-flat shank fully into the chuck and verify positive engagement before resuming operation. When using coolant-through capability, confirm that the coolant supply line and pressure are set per the machine manufacturer specifications before initiating the cut. Carbide tooling is brittle — avoid lateral loading or impact that can cause chipping or fracture.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.2570 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 135 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Bright\/Uncoated\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\u003ePrimary Workpiece Material\u003c\/strong\u003e: Aluminum and Non-Ferrous\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.5827 inches (91.00 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2.0866 inches (53.00 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 43.00 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 8 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 36 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: 3-Flat\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 Point Length\u003c\/strong\u003e: 1.21 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: 0.0002 to 0.0008 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: Specialized\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.08378 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 3.94 inches (L) x 0.31 inches (W) x 0.31 inches (H)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241634\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: 5990937\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"KENNAMETAL","offers":[{"title":"Default Title","offer_id":51735220355378,"sku":"5990937","price":320.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5c855731e68e5e6ed5a3b9f507bae2fb_f84db50e-2f87-4989-af33-02807b6c2300.jpg?v=1788770489","url":"https:\/\/voomisupply.com\/products\/kennametal-5990937-solid-carbide-jobber-drill-letter-f","provider":"Voomi Supply","version":"1.0","type":"link"}