{"product_id":"hertel-c-e03-0345-aircraft-extension-drill-bit-no-29","title":"Hertel C.E03.0345 Aircraft Extension Drill Bit No. 29","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL C.E03.0345 is a No. 29 wire-gauge aircraft extension drill bit designed for reaching into recessed or deep-set drilling locations that standard-length bits cannot access. Built from high-speed steel with an oxide finish, it measures 6 inches in overall length with a 1.75-inch spiral flute and a 0.1360-inch decimal diameter. The 135-degree split point is self-centering and web-thinned, reducing the thrust needed to start a hole and minimizing walking on hard or coated surfaces. Right-hand cutting with a two-flute spiral configuration, this bit is a general-purpose tool suited to aerospace, sheet metal, and structural drilling work where extended reach is required.\u003c\/p\u003e\u003cp\u003eAircraft extension drill bits like the C.E03.0345 are used in applications where standard jobber-length bits fall short. Typical install scenarios include drilling through aircraft skins, deep structural members, HVAC ductwork flanges, and sheet metal assemblies where a pilot hole or through-hole must be placed in a confined or recessed area. The straight cylindrical shank fits standard drill chucks without an adapter, making it compatible with handheld drills, drill presses, and right-angle drill attachments commonly used by aviation maintenance technicians, sheet metal workers, and mechanical contractors. It meets NAS 907 standards, confirming suitability for aerospace-grade drilling operations.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eNo. 29 wire gauge, 0.1360-inch decimal diameter for precision sizing in close-tolerance hole applications\u003c\/li\u003e\n\u003cli\u003e135-degree split point is self-centering and reduces drill walking on curved or coated surfaces\u003c\/li\u003e\n\u003cli\u003eWeb-thinned with tapered web configuration to lower thrust requirements and extend bit life\u003c\/li\u003e\n\u003cli\u003e6-inch overall length provides extended reach into recessed or deep structural locations\u003c\/li\u003e\n\u003cli\u003eHigh-speed steel construction with oxide finish for general-purpose durability across metal substrates\u003c\/li\u003e\n\u003cli\u003eMeets NAS 907 aerospace standard\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 0.1360-inch straight cylindrical shank, suitable for aerospace, sheet metal, and mechanical drilling applications conforming to NAS 907.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use of this bit should be performed by qualified machinists, aviation maintenance technicians, or sheet metal workers familiar with proper drilling techniques for metal substrates. Secure the workpiece before drilling and use appropriate cutting fluid or lubricant to extend bit life and improve hole quality in steel or aluminum. Inspect the bit for chipping or wear before each use and replace if the cutting edges show damage. Follow applicable aerospace maintenance manuals or facility safety procedures when drilling on structural components.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire Gauge)\u003c\/strong\u003e: No. 29\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.1360 inches\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: 1.75 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: 0.1360 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\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, 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\u003eStandard\u003c\/strong\u003e: NAS 907\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241637\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.2 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.E03.0345\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51748121870642,"sku":"C.E03.0345","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/508409b9766daa5c90ea73ad40814068.jpg?v=1788889332","url":"https:\/\/voomisupply.com\/products\/hertel-c-e03-0345-aircraft-extension-drill-bit-no-29","provider":"Voomi Supply","version":"1.0","type":"link"}