{"product_id":"precision-twist-drill-6001226-aircraft-extension-drill","title":"Precision Twist Drill 6001226 Aircraft Extension Drill","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 6001226 is a high speed steel aircraft extension drill bit engineered for deep-reach drilling applications where a standard-length bit cannot access the workpiece. Built to Series 501-12 specifications, it features a 135-degree split point for self-centering entry without a center punch, reducing walking on hard or curved surfaces. The 0.228-inch diameter corresponds to Wire Size 1 and matches a straight-cylindrical shank of the same diameter for secure chuck retention. At 12 inches overall length with a 2.625-inch spiral flute, this bit gives mechanics, aerospace technicians, and structural tradespeople the reach needed for confined or layered assemblies. An oxide finish provides baseline lubricity and corrosion resistance during use.\u003c\/p\u003e\n\u003cp\u003eThis extension drill is suited for production and maintenance drilling in aerospace, aviation, automotive, and general fabrication environments. The 135-degree split point and web-thinned, tapered web construction reduce thrust load and improve chip evacuation in ferrous and non-ferrous materials. The 4xD flute-length-to-diameter ratio supports controlled chip clearing in moderate-depth holes. It is a right-hand cutting tool and is installed in standard three-jaw chucks or drill motors used by aircraft mechanics, structural ironworkers, and sheet metal technicians.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e135-degree split point is self-centering, eliminating the need for a center punch on most surfaces\u003c\/li\u003e\n  \u003cli\u003e12-inch overall length provides extended reach for deep or confined drilling locations\u003c\/li\u003e\n  \u003cli\u003e0.228-inch diameter matches Wire Size 1 for compatibility with standard drill charts and templates\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction handles general-purpose drilling in steel, aluminum, and similar materials\u003c\/li\u003e\n  \u003cli\u003eOxide finish offers surface lubricity and basic protection against corrosion\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned, tapered web reduces cutting resistance and improves chip flow\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 meeting NAS 907 standards, suitable for use with standard three-jaw drill chucks accepting a 0.228-inch straight-cylindrical shank.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall this bit in a properly rated drill motor or press using a three-jaw chuck, ensuring the shank is fully seated and tightened before operation. Verify spindle speed is appropriate for the material and bit diameter before cutting. Wear appropriate personal protective equipment including eye protection when drilling. Inspect the bit for wear or damage before each use and replace if the cutting edges are chipped or the flutes are clogged.\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: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.228 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: 2.625 inches\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: 0.228 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\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\u003eWeb Configuration\u003c\/strong\u003e: Tapered, 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\u003eSeries\u003c\/strong\u003e: 501-12\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: 0.083 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: PRECISION TWIST DRILL\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 6001226\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51719482835250,"sku":"6001226","price":35.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/da3496e4617881f200db3c68936287ae_87d525cb-1e65-4ef2-918a-b3cbd847554e.jpg?v=1788559668","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-6001226-aircraft-extension-drill","provider":"Voomi Supply","version":"1.0","type":"link"}