{"product_id":"precision-twist-drill-5996127-cobalt-aircraft-drill-bit","title":"Precision Twist Drill 5996127 Cobalt Aircraft Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe PRECISION TWIST DRILL 5996127 is a cobalt aircraft extension drill bit designed for drilling in hard metals, stainless steel, and high-temperature alloys where standard high-speed steel bits fail prematurely. Built to Series CO501-6 specifications, this bit features a 135-degree split point for self-centering entry without a center punch, reducing walking on curved or coated surfaces. The straw finish indicates a heat-treatment process that improves surface hardness and lubricity. At 0.067 inches in diameter (Wire Size 51) with a 1-inch flute length and 6-inch overall length, this extended-reach bit handles deep-hole applications where a standard-length bit cannot reach.\u003c\/p\u003e\u003cp\u003eThis drill bit is suited for aerospace, aviation maintenance, fabrication shops, and industrial metalworking environments requiring extended reach into confined or recessed areas. The straight-cylindrical shank fits standard drill chucks without adapters. The right-hand spiral flute and web-thinned, tapered web construction improve chip evacuation and reduce thrust force in tough materials. Machinists, aircraft mechanics, and metal fabricators working under NAS 907 Type J standards will find this bit appropriate for general-purpose drilling in difficult materials.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\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\u003eCobalt construction provides heat resistance for drilling stainless steel, titanium, and hard alloys\u003c\/li\u003e\n\u003cli\u003eStraw finish improves surface hardness and reduces friction during cutting\u003c\/li\u003e\n\u003cli\u003e6-inch overall length with 1-inch flute length delivers extended reach into deep or confined bores\u003c\/li\u003e\n\u003cli\u003eWeb-thinned tapered web reduces cutting resistance and improves chip clearance\u003c\/li\u003e\n\u003cli\u003eMeets NAS 907 Type J standard for aircraft-quality drilling applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a general-purpose aircraft extension drill bit in Series CO501-6, compatible with any standard drill chuck accepting a 0.067-inch straight-cylindrical shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis bit is installed and used by machinists, aircraft mechanics, and metal fabricators operating drill presses, hand drills, or CNC equipment. Secure the straight-cylindrical shank firmly in the chuck before operation. Use appropriate cutting fluid when drilling hard alloys or stainless steel to extend bit life and manage heat buildup. Inspect the cutting edges for wear before each use, as cobalt bits can chip if run at incorrect speeds or feeds for the material.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: 51\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal)\u003c\/strong\u003e: 0.067 inches\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: 1 inch\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.067 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Cobalt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Straw\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\u003eSelf-Centering\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: CO501-6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: NAS 907 Type J\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.042 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: 5996127\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51697035739442,"sku":"5996127","price":19.01,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/9a3e48cb1baf3e332194f6fb8f7c2a57_d76351b4-fc07-4ba5-8e37-5650ba243b5e.jpg?v=1788348702","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5996127-cobalt-aircraft-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}