{"product_id":"hertel-c-e03-0749-aircraft-extension-drill-bit-letter-m","title":"Hertel C.E03.0749 Aircraft Extension Drill Bit Letter M","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe HERTEL C.E03.0749 is an aircraft extension drill bit sized to Letter M (0.2950 inches decimal) with a 135-degree split point and a web-thinned, tapered web configuration. Built from high-speed steel with an oxide finish, it is designed for right-hand cutting in deep-reach drilling applications where a standard-length bit cannot access the work surface. The 6-inch overall length and 3.0625-inch spiral flute allow chips to evacuate efficiently even in extended-reach setups. Licensed HVAC technicians, aircraft maintenance professionals, and industrial tradespeople rely on this geometry for clean, self-centering entry without a pilot hole.\u003c\/p\u003e\n\u003cp\u003eThis bit is intended for general-purpose drilling in applications that require extended reach, such as airframe assembly, structural metalwork, and deep-cavity drilling in fabrication shops. The split-point tip reduces walking and thrust requirements, making it practical on drill presses and hand-held pneumatic or electric drills in both shop and field environments. It conforms to NAS 907 standards, which governs aircraft-quality drill bit geometry and tolerances.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eLetter M size — 0.2950 inches decimal diameter for precise hole sizing\u003c\/li\u003e\n  \u003cli\u003e135-degree split point with self-centering geometry reduces bit walk and lowers required thrust\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned tapered web improves cutting efficiency and chip clearance\u003c\/li\u003e\n  \u003cli\u003eHigh-speed steel construction with oxide finish for wear resistance in general-purpose metalworking\u003c\/li\u003e\n  \u003cli\u003e6-inch overall length provides extended reach for deep-cavity and airframe drilling\u003c\/li\u003e\n  \u003cli\u003eMeets NAS 907 aircraft drill bit standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a general-purpose aircraft extension drill bit suitable for use in standard straight-shank drill chucks; conforms to NAS 907 dimensional and performance standards for aircraft-quality tooling.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall into a compatible straight-shank chuck and verify concentricity before drilling. Always secure the workpiece and wear appropriate eye and hand protection. When drilling metal, use cutting fluid or oil to extend tool life and maintain dimensional accuracy. Follow applicable workplace safety codes and material-specific drilling guidelines for feed rate and speed selection.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: M\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.2950 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\u003eOverall Length\u003c\/strong\u003e: 6 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 3.0625 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\u003eShank Type\u003c\/strong\u003e: Straight Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.2950 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 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\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\u003eStandards\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\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.E03.0749\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"HERTEL","offers":[{"title":"Default Title","offer_id":51728068149554,"sku":"C.E03.0749","price":37.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/3203ec50bff0f5386a288bf50c70ac21.jpg?v=1788687345","url":"https:\/\/voomisupply.com\/products\/hertel-c-e03-0749-aircraft-extension-drill-bit-letter-m","provider":"Voomi Supply","version":"1.0","type":"link"}