{"product_id":"hertel-c-e07-0531-aircraft-extension-drill-bit-12-in","title":"Hertel C.E07.0531 Aircraft Extension Drill Bit 12 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL C.E07.0531 is a cobalt aircraft extension drill bit engineered for drilling in hard and abrasion-resistant materials where extended reach is required. Built to a 12-inch overall length with a 2.5-inch spiral flute, this bit handles deep-hole and hard-to-reach drilling applications common in aerospace, fabrication, and maintenance work. The 135-degree split point is self-centering and reduces the need for a center punch on flat or curved stock. A straw finish indicates the cobalt heat treatment used to improve hardness and wear resistance. The 0.2090-inch diameter corresponds to wire gauge size 4. Installed by machinists, aviation maintenance technicians, and metalworking professionals.\u003c\/p\u003e\n\u003cp\u003eThis bit is suited for drilling through stainless steel, high-strength steel, titanium, and other tough alloys where standard high-speed steel bits would wear prematurely. The extended 12-inch length makes it practical for structural airframe work, deep-cavity drilling, and through-panel applications in both aviation and general fabrication environments. The straight cylindrical shank accepts standard drill chucks without adapters, and right-hand cutting direction is compatible with conventional drill presses and hand drills. General-purpose performance rating covers a wide range of production and maintenance drilling tasks.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt tool material with straw finish for improved hardness and heat resistance\u003c\/li\u003e\n  \u003cli\u003e135-degree split point is self-centering and reduces walking on entry\u003c\/li\u003e\n  \u003cli\u003e12-inch overall length provides extended reach for deep or obstructed drilling locations\u003c\/li\u003e\n  \u003cli\u003e0.2090-inch diameter wire size 4 with tapered web configuration for reduced thrust\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned geometry lowers cutting resistance in hard materials\u003c\/li\u003e\n  \u003cli\u003eMeets NAS 907 standard for aircraft-grade drill bit performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a general-purpose aircraft extension drill bit compatible with standard drill chucks accepting a 0.2090-inch straight cylindrical shank. Suitable for use in drill presses, hand drills, and pneumatic drill motors used in aviation maintenance and metal fabrication applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists or aviation maintenance technicians using standard drill chucks and appropriate cutting fluid for the base material. Secure the workpiece firmly before drilling to prevent movement during bit entry. Inspect the cutting edges before use and replace bits showing signs of chipping or heat discoloration beyond normal straw finish. Follow applicable workplace safety and aviation maintenance regulations when drilling structural components.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: 4\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.2090 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: 2.5 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\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\u003eShank Diameter\u003c\/strong\u003e: 0.2090 inches\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: 0.11 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\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.E07.0531\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51751964115250,"sku":"C.E07.0531","price":39.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/8dce7663c6df8aefedd27d5b42511512.jpg?v=1788924903","url":"https:\/\/voomisupply.com\/products\/hertel-c-e07-0531-aircraft-extension-drill-bit-12-in","provider":"Voomi Supply","version":"1.0","type":"link"}