{"product_id":"precision-twist-drill-6001209-aircraft-extension-drill-bit","title":"Precision Twist Drill 6001209 Aircraft Extension Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe PRECISION TWIST DRILL 6001209 is a high speed steel aircraft extension drill bit designed for deep-reach drilling applications where a standard-length bit cannot access the work area. Built to Series 500-6 specifications, it features a 135-degree split point that self-centers on contact, eliminating the need for a center punch on most materials. The two-flute spiral design with web thinning reduces cutting resistance and improves chip evacuation. An oxide finish provides baseline lubricity and corrosion resistance. This bit is sized at 5\/16 inch (0.3125 inch decimal) with a 3-3\/16 inch flute length, making it well suited for extended reach in structural, sheet metal, and aircraft-style drilling work.\u003c\/p\u003e\u003cp\u003eThis extension drill bit is used in applications where access depth exceeds the reach of a jobber-length bit, such as drilling through structural members, deep flanges, or confined assemblies in aerospace, HVAC fabrication, and sheet metal work. The straight-cylindrical shank fits standard drill chucks without adapters. Right-hand cutting direction is compatible with conventional drill press and handheld drill operation. General-purpose tool performance rating makes it appropriate for a range of ferrous and non-ferrous materials at typical shop feeds and speeds.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e135-degree split point self-centers without a center punch, reducing setup time\u003c\/li\u003e\n\u003cli\u003eWeb-thinned tapered web reduces thrust and extends tool life in production use\u003c\/li\u003e\n\u003cli\u003eExtended flute length of 3-3\/16 inches enables drilling in deep or hard-to-reach locations\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction handles a broad range of metals at conventional cutting speeds\u003c\/li\u003e\n\u003cli\u003eOxide finish provides light lubricity and surface protection\u003c\/li\u003e\n\u003cli\u003eMeets NAS 907 Type B standard for aircraft-quality drill bit geometry\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose aircraft extension drill bit with a straight-cylindrical shank compatible with standard three-jaw drill chucks. Sized to NAS 907 Type B requirements for use in aerospace and structural drilling applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis bit is installed and removed by a qualified machinist, aircraft mechanic, or sheet metal tradesperson using a standard keyed or keyless drill chuck. Ensure the drill is fully powered down and the chuck is secured before beginning work. Do not exceed the recommended feed rate for the workpiece material, as excessive pressure on an extended bit can cause deflection or breakage. Inspect the split point and cutting edges before each use and replace the bit if chipping or wear is observed.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size\u003c\/strong\u003e: 5\/16 inch (0.3125 inch)\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: 3-3\/16 inches (3.1875 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 5\/16 inch (0.3125 inch)\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\u003eSelf-Centering\u003c\/strong\u003e: Yes\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\u003eFlute Length to Diameter Ratio\u003c\/strong\u003e: 4xD\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\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\u003eTool Performance\u003c\/strong\u003e: General Purpose\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 500-6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: NAS 907 Type B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.083 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: PRECISION TWIST DRILL\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 6001209\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51702906650930,"sku":"6001209","price":38.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/bb6be9261411d24f87b81aefb1284e34_457faa6c-0273-426c-b911-ebee68cf1236.jpg?v=1788413852","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-6001209-aircraft-extension-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}