{"product_id":"hertel-c-e05-0480-aircraft-extension-drill-bit-no-12","title":"Hertel C.E05.0480 Aircraft Extension Drill Bit No. 12","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL C.E05.0480 is a No. 12 wire-size aircraft extension drill bit engineered for deep-reach drilling applications where a standard-length bit cannot access the workpiece. Built from high-speed steel with an oxide finish, it measures 12 inches in overall length and features a 135-degree split point that is self-centering and web-thinned for reduced thrust and cleaner entry. The spiral flute design evacuates chips efficiently during extended drilling cycles. With a straight cylindrical shank at 0.1890 inches in diameter and two flutes with a tapered web configuration, this bit is suited for general-purpose metalworking and aerospace-adjacent fabrication tasks performed by machinists and maintenance technicians.\u003c\/p\u003e\u003cp\u003eThis aircraft extension drill bit is designed for reaching into cavities, through structural members, or along channels where conventional drill bit lengths are insufficient. It is commonly used in aircraft maintenance, sheet metal fabrication, and industrial maintenance environments. The 12-inch overall length provides the reach needed for deep-hole drilling in aluminum, mild steel, and similar materials. It conforms to NAS 907 standards, making it appropriate for applications where aerospace-grade tooling requirements apply.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eNo. 12 wire size with 0.1890-inch decimal diameter for precision sizing\u003c\/li\u003e\n\u003cli\u003e135-degree split point with self-centering geometry reduces walking and minimizes required thrust\u003c\/li\u003e\n\u003cli\u003eWeb-thinned, tapered web construction improves cutting efficiency and lowers drill pressure\u003c\/li\u003e\n\u003cli\u003e12-inch overall length provides extended reach for deep or obstructed drilling locations\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction with oxide finish for heat resistance and corrosion protection\u003c\/li\u003e\n\u003cli\u003eConforms to NAS 907 standards for aerospace and industrial tooling applications\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 drill chucks accepting a 0.1890-inch straight cylindrical shank, compatible with hand drills, drill presses, and right-angle drilling attachments used in metalworking and aircraft maintenance operations.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis bit is installed by machinists and maintenance technicians using standard drill equipment. Secure the straight cylindrical shank firmly in the chuck before operation and verify the workpiece is clamped or fixtured to prevent movement. Apply cutting fluid appropriate to the workpiece material to extend tool life and improve hole quality. Inspect the cutting edges before each use and replace the bit if chipping or dullness is observed.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: No. 12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal)\u003c\/strong\u003e: 0.1890 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 12 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2.3125 inches (2-5\/16 inches)\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\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.1890 inches\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: Spiral\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\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\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\u003eStandard\u003c\/strong\u003e: NAS 907\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.15 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.E05.0480\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51753418391858,"sku":"C.E05.0480","price":20.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e4eae207f9181e3a3e04460743fa05dd.jpg?v=1788936594","url":"https:\/\/voomisupply.com\/products\/hertel-c-e05-0480-aircraft-extension-drill-bit-no-12","provider":"Voomi Supply","version":"1.0","type":"link"}