{"product_id":"chicago-latrobe-11151-aircraft-extension-drill-bit-27-hss","title":"Chicago-latrobe 11151 Aircraft Extension Drill Bit 27 Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe CHICAGO-LATROBE 11151 is a high speed steel aircraft extension drill bit designed for precision drilling in metal, composite, and structural materials common to aerospace and industrial maintenance applications. Built to Series 912 specifications, it features a 135-degree split point that is self-centering and web-thinned, reducing walking on entry and lowering the thrust needed to start a hole. The bit carries an oxide finish for basic lubricity and corrosion resistance during storage and use. The straight cylindrical shank measures 0.1440 inches in diameter, matching the wire size 27 designation. Flute length is 1.875 inches. Licensed HVAC, mechanical, and maintenance technicians routinely use extension-length drill bits like this one when standard-length bits cannot reach fastener locations in confined assemblies.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is suited for production and maintenance drilling in ferrous and non-ferrous metals, light alloys, and similar materials where a 0.1440-inch diameter hole is required. The extended overall length of 12 inches allows access to recessed or deep locations that a jobber-length bit cannot reach. The right-hand spiral flute and two-flute geometry promote chip evacuation in through-hole drilling operations. General-purpose performance rating makes it appropriate for manual drill motors as well as drill press work at moderate speeds and feeds.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e135-degree split point with web thinning for self-centering entry and reduced thrust\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction for general-purpose metal drilling\u003c\/li\u003e\n  \u003cli\u003eOxide finish provides basic corrosion resistance and mild lubricity\u003c\/li\u003e\n  \u003cli\u003e12-inch overall length for access to recessed or deep drilling locations\u003c\/li\u003e\n  \u003cli\u003eStraight cylindrical shank at 0.1440 inches for standard chuck compatibility\u003c\/li\u003e\n  \u003cli\u003eMeets NAS 907 Type B standard for aircraft-quality drill geometry\u003c\/li\u003e\n  \u003cli\u003eDiameter tolerance held to +0.0000 to -0.0007 inches for close-fit hole applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a general-purpose aircraft extension drill bit conforming to NAS 907 Type B, compatible with standard three-jaw chucks and collet systems accepting a 0.1440-inch straight cylindrical shank.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation of this drill bit requires a drill motor or drill press with a chuck rated for the shank diameter. Secure the shank fully in the chuck before applying power and verify the bit runs true before contact with the workpiece. When drilling metals, use appropriate cutting fluid to extend bit life and maintain hole tolerance. Follow applicable facility safety and PPE requirements when operating rotary cutting tools.\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: 27\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.1440 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, Self-Centering\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\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: 0.1440 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\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\u003eDiameter Tolerance\u003c\/strong\u003e: +0.0000 to -0.0007 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Performance\u003c\/strong\u003e: General Purpose\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 912\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: NAS 907 Type B\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: CHICAGO-LATROBE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 11151\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CHICAGO-LATROBE","offers":[{"title":"Default Title","offer_id":51752924021042,"sku":"11151","price":165.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/9cfe4602e4dc52ea3b0ff0cce686eaae_cb4dbc98-fa3c-425a-9673-77fb4a4a7836.jpg?v=1788931170","url":"https:\/\/voomisupply.com\/products\/chicago-latrobe-11151-aircraft-extension-drill-bit-27-hss","provider":"Voomi Supply","version":"1.0","type":"link"}