{"product_id":"precision-twist-drill-6001236-aircraft-extension-drill-bit","title":"Precision Twist Drill 6001236 Aircraft Extension Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe PRECISION TWIST DRILL 6001236 is a 9\/64 inch (0.1406 inch decimal) high speed steel aircraft extension drill bit designed for deep-reach drilling applications in metal, composite, and structural materials. Built to NAS 907 Type B standards, it features a 135-degree split point that self-centers on contact, reducing the need for a center punch and minimizing walking on curved or sloped surfaces. The oxide finish provides corrosion resistance and mild lubricity during cutting. With a 1.75-inch spiral flute length and a total overall length of 12 inches, this bit reaches into recessed cavities and structural members that standard-length bits cannot access. It is a general-purpose tool suited for aviation maintenance technicians, sheet metal workers, structural mechanics, and fabricators who work in confined or deep-bore conditions.\u003c\/p\u003e\u003cp\u003eThis aircraft extension drill bit is built for applications where reach is critical — drilling through airframe structures, deep structural assemblies, automotive chassis members, and fabricated metal enclosures. The 12-inch overall length combined with the 9\/64 inch straight-cylindrical shank allows it to reach blind locations inaccessible to jobber-length bits. The 4xD flute-length-to-diameter ratio supports chip evacuation in deeper passes. It is sold individually and suited for both production and field repair environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e135-degree split point with self-centering geometry reduces walking and eliminates center-punch requirements on most metal surfaces\u003c\/li\u003e\n\u003cli\u003e12-inch overall length provides extended reach into deep structural cavities and recessed assemblies\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction handles general-purpose metal drilling across a wide range of materials\u003c\/li\u003e\n\u003cli\u003eWeb-thinned tapered web configuration reduces thrust force and improves chip flow\u003c\/li\u003e\n\u003cli\u003eOxide finish adds corrosion resistance and reduces friction at the cutting edge\u003c\/li\u003e\n\u003cli\u003eNAS 907 Type B compliant for use in aerospace and structural applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style fit for standard straight-cylindrical shank drill chucks accepting a 9\/64 inch shank diameter. Belongs to the Series 500-12 aircraft extension drill family from PRECISION TWIST DRILL.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis bit is installed by licensed aviation maintenance technicians, sheet metal mechanics, and structural fabricators working under applicable maintenance manuals or shop standards. Secure the straight-cylindrical shank firmly in a keyed or keyless chuck before use and verify chuck concentricity to avoid runout on small-diameter bits. When drilling metals, use appropriate cutting fluid to extend tool life and improve hole finish. Inspect the split point for wear or chipping before each use, as a damaged point on a small-diameter extension bit can cause breakage under lateral load.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size\u003c\/strong\u003e: 9\/64 inch (0.1406 inch decimal)\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: 1.75 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 9\/64 inch (0.1406 inch decimal)\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\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 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\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\u003eTool Performance\u003c\/strong\u003e: General Purpose\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 500-12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: NAS 907 Type B\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.04 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\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: 6001236\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51719202046258,"sku":"6001236","price":25.12,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/00c62afe4afb4c768fcc83692ac48d80_a143588d-5ea0-4dae-a0fb-b0c5f31ef0a2.jpg?v=1788558092","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-6001236-aircraft-extension-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}