{"product_id":"hertel-c-e03-0635-aircraft-drill-bit-e-1-4-in-hss","title":"Hertel C.E03.0635 Aircraft Drill Bit E 1\/4 in Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL C.E03.0635 is an aircraft extension drill bit designed for deep-reach drilling applications where standard-length bits fall short. Built from high-speed steel with an oxide finish, this bit measures 6 inches in overall length and features a 135-degree split point that is self-centering, reducing the need for a center punch on most surfaces. The 2.75-inch spiral flute with a tapered web configuration and web-thinned geometry promotes efficient chip evacuation. Right-hand cutting direction and a straight cylindrical shank make it compatible with standard drill chucks. Machinists, aircraft maintenance technicians, and metalworkers rely on this bit for precision hole-making in confined or extended-reach setups.\u003c\/p\u003e\u003cp\u003eThis drill bit is suited for general-purpose drilling in metal, including aluminum, mild steel, and similar materials encountered in aerospace maintenance, fabrication shops, and machine shops. The aircraft extension length allows access to fastener locations and structural members that standard jobber-length bits cannot reach. Its 1\/4-inch diameter corresponds to Letter E sizing and is commonly used when drilling for hardware that requires close-tolerance fits.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e135-degree split point is self-centering for accurate hole starts without center punching\u003c\/li\u003e\n\u003cli\u003eWeb-thinned tapered web reduces thrust and improves cutting efficiency\u003c\/li\u003e\n\u003cli\u003e2.75-inch spiral flute length promotes chip clearance during extended drilling\u003c\/li\u003e\n\u003cli\u003eOxide finish provides mild corrosion resistance during storage and use\u003c\/li\u003e\n\u003cli\u003e6-inch overall length provides extended reach for aircraft and deep-cavity applications\u003c\/li\u003e\n\u003cli\u003eStraight cylindrical 1\/4-inch shank fits standard drill chucks and quick-change holders\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose aircraft extension drill bit for use in standard 3-jaw and keyless drill chucks accepting a 1\/4-inch straight cylindrical shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should be performed by qualified machinists or maintenance technicians familiar with drill press or handheld drill operation. Secure the workpiece before drilling and ensure the chuck is fully tightened on the shank before operation. Use appropriate cutting fluid for ferrous metals to extend tool life and improve hole quality. Inspect the cutting edges before each use and replace the bit if chipping or excessive wear is observed.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Inch)\u003c\/strong\u003e: 1\/4 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: E\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal)\u003c\/strong\u003e: 0.2500 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.2500 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 135 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Split\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\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\u003eSelf-Centering\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Thinning\u003c\/strong\u003e: Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: High-Speed Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Oxide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Performance\u003c\/strong\u003e: General Purpose\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.8 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: HERTEL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: C.E03.0635\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51733068251442,"sku":"C.E03.0635","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/20880c960612a168dd514c9fcff2c9cf.jpg?v=1788751085","url":"https:\/\/voomisupply.com\/products\/hertel-c-e03-0635-aircraft-drill-bit-e-1-4-in-hss","provider":"Voomi Supply","version":"1.0","type":"link"}