{"product_id":"precision-twist-drill-6001414-letter-n-hss-extension-drill","title":"Precision Twist Drill 6001414 Letter N Hss Extension Drill","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe PRECISION TWIST DRILL 6001414 is a Letter N aircraft extension drill bit designed for deep-hole drilling in aerospace, structural, and industrial applications. Built from high speed steel with an oxide finish, this bit measures 0.302 inches in diameter and reaches 12 inches in overall length, making it the right tool when standard-length bits cannot reach the work zone. The 135-degree split point is self-centering and web-thinned, which reduces walking on entry and lowers thrust force needed to start a hole. Two spiral flutes evacuate chips efficiently during extended drilling passes.\u003c\/p\u003e\u003cp\u003eThis drill bit is suited for use in aircraft maintenance, sheet metal work, structural fabrication, and any application where a 12-inch extension reach is required. The straight-cylindrical shank fits standard drill chucks without an adapter. The Series 502-12 designation places this bit in Precision Twist Drill's general-purpose aircraft extension line. It is commonly used by aerospace technicians, maintenance mechanics, and fabricators working on assemblies where direct access to the workpiece face is restricted.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eLetter N (0.302 inches) diameter for precise hole sizing in standard letter-drill applications\u003c\/li\u003e\n\u003cli\u003e12-inch overall length provides extended reach into deep or obstructed work areas\u003c\/li\u003e\n\u003cli\u003e135-degree split point with web thinning is self-centering and reduces thrust on entry\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction handles a broad range of metals and hard plastics\u003c\/li\u003e\n\u003cli\u003eOxide finish improves lubricity and provides basic corrosion resistance during storage and use\u003c\/li\u003e\n\u003cli\u003eTapered web configuration with 2-flute spiral design for efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003eMeets NAS 907 Type B standards for aircraft extension drill bits\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose aircraft extension drill bit conforming to NAS 907 Type B. Fits standard drill chucks accepting a 0.302-inch straight-cylindrical shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation of this drill bit is performed by a machinist, aircraft mechanic, or fabricator using a standard keyed or keyless drill chuck. Secure the straight shank firmly in the chuck before operation to prevent slippage during extension drilling. Use appropriate cutting fluid for the workpiece material, especially when drilling steel or aluminum alloy. Always wear eye protection and secure the workpiece before beginning the cut.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: N\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal)\u003c\/strong\u003e: 0.302 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: 3.0625 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: 0.302 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\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\u003eFlute Length to Diameter Ratio\u003c\/strong\u003e: 4xD\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: 502-12\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: 6001414\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51693790298418,"sku":"6001414","price":59.09,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/8b95963359e0e9e891b37a0b3fb5497c_fda46e31-a36b-4669-a530-6792c45c0acb.jpg?v=1788317377","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-6001414-letter-n-hss-extension-drill","provider":"Voomi Supply","version":"1.0","type":"link"}