{"product_id":"chicago-latrobe-11154-aircraft-extension-drill-bit-0-1285-in","title":"Chicago-latrobe 11154 Aircraft Extension Drill Bit 0.1285 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe CHICAGO-LATROBE 11154 is a high speed steel aircraft extension drill bit designed for precision drilling in deep or hard-to-reach locations. Built to Series 912 standards, it features a 135-degree split point with web thinning for self-centering starts and reduced thrust on entry. The 12-inch overall length gives technicians the reach needed for airframe, structural, and industrial applications where standard-length bits fall short. The oxide finish provides light corrosion resistance during storage and handling. Manufactured to NAS 907 Type B standards, this bit suits shops and field crews that work to tight tolerances in metal fabrication and maintenance tasks.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is suited for drilling in ferrous metals, aluminum, and structural materials where extended reach is required. The 0.1285-inch diameter corresponds to Wire Size 30, a common size in aerospace, HVAC equipment assembly, and general metal fabrication. The 1.625-inch spiral flute length and right-hand cutting direction are consistent with standard drilling setups on vertical mills, drill presses, and hand-held power drills. It is typically used by aviation maintenance technicians, millwrights, pipefitters, and general fabricators working with metal assemblies requiring clean, accurate holes.\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 starts and lower entry thrust\u003c\/li\u003e\n  \u003cli\u003e12-inch overall length for extended reach in deep or obstructed drilling applications\u003c\/li\u003e\n  \u003cli\u003eWire Size 30 (0.1285 inches) straight-cylindrical shank for standard chuck compatibility\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction rated for general-purpose metal drilling\u003c\/li\u003e\n  \u003cli\u003eOxide finish for corrosion resistance during storage and handling\u003c\/li\u003e\n  \u003cli\u003eManufactured to NAS 907 Type B standards with a diameter tolerance of +0.0000 to -0.0007 inches\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style general-purpose aircraft extension drill bit compatible with standard 3-jaw chucks and collet systems accepting a 0.1285-inch straight-cylindrical shank. Conforms to NAS 907 Type B specifications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation of this drill bit is performed by machinists, aviation maintenance technicians, or qualified fabricators using a drill press, mill, or hand-held power drill. Secure the shank fully in the chuck before operation and verify chuck tightness to prevent slippage during extended-reach drilling. Use appropriate cutting fluid for ferrous metals to preserve bit life and hole quality. Follow applicable shop safety standards and wear eye protection at all times during drilling operations.\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: 30\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.1285 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: 1.625 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.1285 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\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\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\u003eSelf-Centering\u003c\/strong\u003e: Yes\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\u003eSeries\u003c\/strong\u003e: 912\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: NAS 907 Type B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Performance\u003c\/strong\u003e: General Purpose\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 11154\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CHICAGO-LATROBE","offers":[{"title":"Default Title","offer_id":51755889426738,"sku":"11154","price":19.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/9cfe4602e4dc52ea3b0ff0cce686eaae_ccc2a553-97b3-4c55-a402-5d41ef263134.jpg?v=1788961194","url":"https:\/\/voomisupply.com\/products\/chicago-latrobe-11154-aircraft-extension-drill-bit-0-1285-in","provider":"Voomi Supply","version":"1.0","type":"link"}