{"product_id":"hertel-c-e07-0380-aircraft-extension-drill-bit-25-cobalt","title":"Hertel C.E07.0380 Aircraft Extension Drill Bit 25 Cobalt","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe HERTEL C.E07.0380 is a cobalt aircraft extension drill bit designed for drilling in hard and abrasion-resistant materials where standard-length bits cannot reach. Built to a 12-inch overall length with a straight cylindrical shank, this bit accepts the wire gauge size 25, equivalent to 0.1495 inches in diameter. The 135-degree split point is self-centering and reduces the need for a center punch, while the web-thinned, tapered web construction lowers cutting resistance. A straw finish indicates the cobalt steel has been heat-treated for improved hardness and wear resistance. Two right-hand spiral flutes clear chips efficiently during drilling operations.\u003c\/p\u003e\u003cp\u003eThis bit is suited for aerospace, sheet metal, and structural fabrication work where extended reach is required in confined or deep-access areas. The cobalt construction makes it appropriate for stainless steel, high-nickel alloys, titanium, and other difficult-to-machine metals commonly encountered in aircraft maintenance and industrial fabrication. It meets NAS 907 standards, making it appropriate for use in aerospace-grade drilling applications. Machinists, aircraft maintenance technicians, and metalworking tradespeople are the primary installers of this tooling.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eWire gauge size 25 (0.1495 inches) straight cylindrical shank for standard chuck compatibility\u003c\/li\u003e\n\u003cli\u003e135-degree split point with self-centering geometry eliminates center-punch requirement\u003c\/li\u003e\n\u003cli\u003eCobalt tool material with straw finish for heat resistance and extended tool life in hard metals\u003c\/li\u003e\n\u003cli\u003e12-inch overall length provides extended reach into deep or obstructed work areas\u003c\/li\u003e\n\u003cli\u003e1.875-inch spiral flute length with web-thinned tapered web reduces cutting torque\u003c\/li\u003e\n\u003cli\u003eMeets NAS 907 standard for aerospace drilling applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose aircraft extension drill bit conforming to NAS 907 standards, suitable for use in standard drill chucks and pneumatic drilling equipment accepting a 0.1495-inch straight cylindrical shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tooling is used by machinists, aerospace maintenance technicians, and metalworking professionals. Ensure the workpiece is securely clamped and the bit is fully seated in the chuck before drilling. Use appropriate cutting fluid when drilling stainless steel, titanium, or high-nickel alloys to extend tool life and prevent work hardening. Inspect the cutting edges for wear before each use and replace the bit if chipping or dulling 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: 25\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal)\u003c\/strong\u003e: 0.1495 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: 1.875 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: 0.1495 inches\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\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 Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-Centering\u003c\/strong\u003e: Yes\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: 0.06 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.E07.0380\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51749718196530,"sku":"C.E07.0380","price":31.41,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/3e43f070abca7e157fee47a44e7ecd95.jpg?v=1788909538","url":"https:\/\/voomisupply.com\/products\/hertel-c-e07-0380-aircraft-extension-drill-bit-25-cobalt","provider":"Voomi Supply","version":"1.0","type":"link"}