{"product_id":"precision-twist-drill-5995805-cobalt-drill-9-64-in","title":"Precision Twist Drill 5995805 Cobalt Drill 9\/64 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PRECISION TWIST DRILL 5995805 is a cobalt aircraft extension drill bit designed for demanding drilling applications where standard-length bits cannot reach. Built from cobalt high-speed steel with a straw finish, this bit handles tough, hard, and abrasive materials including stainless steel, titanium, and high-alloy metals. The 135-degree split point is self-centering, eliminating the need for a center punch on most surfaces and reducing walking at startup. The 12-inch overall length gives technicians reach into deep cavities, recessed panels, and structural members. At 9\/64 inch (0.1406 inch decimal) diameter with a 1.75-inch spiral flute, it fits the CO500-12 series and meets NAS 907 Type J standards.\u003c\/p\u003e\n\u003cp\u003eThis extension drill is suited for aerospace fabrication, HVAC sheet metal work, electrical rough-in, and structural applications where a standard-length bit cannot access the work area. Electricians drilling through deep framing, HVAC installers punching through stacked panels, and aircraft maintenance technicians all use extended-reach cobalt bits like this one. Right-hand cutting direction with a tapered web and web-thinned geometry reduces thrust and chip packing in deep-hole applications. General-purpose performance rating makes it a reliable choice across production and field service environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eCobalt construction for heat resistance in hard and abrasive metals\u003c\/li\u003e\n  \u003cli\u003e135-degree split point with self-centering geometry eliminates pilot punching on most surfaces\u003c\/li\u003e\n  \u003cli\u003e12-inch overall length provides extended reach into deep or restricted work areas\u003c\/li\u003e\n  \u003cli\u003eStraw finish indicates heat-treated cobalt and aids in chip evacuation\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned, tapered web reduces drilling thrust and minimizes bit deflection\u003c\/li\u003e\n  \u003cli\u003eMeets NAS 907 Type J standard for aircraft-grade tooling\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-compatible replacement or direct addition to cobalt aircraft extension drill sets requiring a 9\/64 inch diameter, 12-inch overall length bit. Part of the PRECISION TWIST DRILL CO500-12 series.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis bit is installed and operated by trained machinists, electricians, HVAC technicians, and aircraft maintenance personnel using standard 3-jaw or keyless drill chucks compatible with a straight-cylindrical shank. Secure the workpiece before drilling and use appropriate cutting fluid when working hardened or stainless alloys to extend bit life and control heat. Inspect the split point before each use and replace the bit if the cutting edges show signs of chipping or heat discoloration. Follow applicable shop safety procedures and any relevant trade codes when drilling into structural or pressurized assemblies.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size\u003c\/strong\u003e: 9\/64 inch (0.1406 inch)\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)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 135 degrees\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\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Split\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\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\u003eSelf-Centering\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: CO500-12\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: NAS 907 Type J\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Performance\u003c\/strong\u003e: General Purpose\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.042 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: 5995805\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PRECISION TWIST DRILL","offers":[{"title":"Default Title","offer_id":51692277530930,"sku":"5995805","price":37.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e3b5938b220f02bcc3d165c052aa7823_107bdd6e-9543-4c99-8944-5bc02176cb22.jpg?v=1788295599","url":"https:\/\/voomisupply.com\/products\/precision-twist-drill-5995805-cobalt-drill-9-64-in","provider":"Voomi Supply","version":"1.0","type":"link"}