{"product_id":"hertel-c-e07-0226-aircraft-drill-bit-no-43-cobalt","title":"Hertel C.E07.0226 Aircraft Drill Bit No. 43 Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL C.E07.0226 is a cobalt aircraft extension drill bit designed for deep-reach drilling in tight clearance applications where a standard-length bit cannot access the worksite. Built to a wire gauge size of No. 43 with a decimal diameter of 0.0890 inches, this bit features a 135-degree split point that promotes self-centering on entry and reduces walking without a center punch. The straw finish is characteristic of cobalt high-speed steel tooling, providing moderate heat resistance during high-feed drilling into steel, stainless, and other hard alloys. With a 12-inch overall length and a 1.25-inch spiral flute, this bit is suited for production drilling, aerospace maintenance, and structural fabrication environments.\u003c\/p\u003e\u003cp\u003eAircraft extension drill bits in this size range are used in aerospace assembly, sheet metal work, aircraft repair stations, and structural steel fabrication where access depth is a constraint. The No. 43 wire gauge size is common in applications requiring close-tolerance holes for fasteners, rivets, or pilot passes. Right-hand cutting direction and a straight cylindrical shank make it compatible with standard drill chucks and pneumatic drill motors frequently used in aviation maintenance and industrial settings. This bit is a general-purpose tool appropriate for professional tradespeople and skilled machinists.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eNo. 43 wire gauge size, 0.0890 inches decimal diameter for close-tolerance hole work\u003c\/li\u003e\n\u003cli\u003e135-degree split point with self-centering geometry reduces walking and improves entry accuracy\u003c\/li\u003e\n\u003cli\u003eCobalt tool material with straw finish for improved heat resistance in hard and abrasive materials\u003c\/li\u003e\n\u003cli\u003e12-inch overall length provides extended reach for deep or restricted-access drilling\u003c\/li\u003e\n\u003cli\u003eTwo-flute spiral design with web-thinned, tapered web for efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003eMeets NAS 907 standard for aircraft extension drill bits\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style aircraft extension drill bit conforming to NAS 907, suitable for use in standard drill chucks and pneumatic drill motors accepting a 0.0890-inch straight cylindrical shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis bit is installed by trained machinists, aircraft maintenance technicians, and metalworkers using standard or pneumatic drill equipment. Ensure the drill chuck is fully tightened and the shank is seated squarely before operation. Use appropriate cutting fluid or coolant when drilling hard alloys to extend bit life and maintain dimensional accuracy. Inspect the cutting edges for wear before each use and replace the bit if chipping or blunting is observed.\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. 43\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.0890 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: 1.25 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\u003eTool Material\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Straw\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: 0.0890 inches\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\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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\u003eSelf-Centering\u003c\/strong\u003e: Yes\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: 0.02 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: HERTEL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: C.E07.0226\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51731573571890,"sku":"C.E07.0226","price":29.51,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/676c10f6f9dff8be78c8be7bae768ab0.jpg?v=1788732656","url":"https:\/\/voomisupply.com\/products\/hertel-c-e07-0226-aircraft-drill-bit-no-43-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}