{"product_id":"chicago-latrobe-50639-extra-length-drill-bit-11-16-in-hss","title":"Chicago-latrobe 50639 Extra Length Drill Bit 11\/16 in Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe CHICAGO-LATROBE 50639 is an extra length high speed steel drill bit engineered for deep-hole and long-reach drilling applications. It measures 11\/16 inch (0.6875 inches) in diameter with a 12-inch overall length and a 9-inch spiral flute length, providing extended reach into workpieces where standard-length bits cannot access. The 118-degree notched drill point and web-thinned, tapered web construction reduce entry force and improve chip evacuation. An oxide finish adds surface hardness and basic corrosion resistance. This bit is suited for professional machinists, maintenance technicians, and fabricators working with cast iron and steel.\u003c\/p\u003e\n\u003cp\u003eThe 50639 is designed for long-reach drilling in cast iron and steel workpieces, covering applications such as deep blind holes, cross-drilling through structural members, and extended-reach work in fabrication and maintenance environments. The straight-cylindrical shank at 0.6875 inches diameter fits standard three-jaw drill chucks on drill presses, CNC machining centers, and heavy-duty hand drills. Right-hand cutting direction is standard. The Series 120X designation places it in a line of general-purpose extra-length bits intended for production and job-shop use.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e11\/16 inch (0.6875 inches) diameter with diameter tolerance of +0.0000 to -0.0012 inches for consistent fit\u003c\/li\u003e\n  \u003cli\u003e12-inch overall length and 9-inch flute length for extended long-reach drilling\u003c\/li\u003e\n  \u003cli\u003e118-degree notched point with web thinning reduces thrust and improves center starting\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction with oxide finish for use in cast iron and steel\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank fits standard drill chucks without adapters\u003c\/li\u003e\n  \u003cli\u003eRegular spiral, 2-flute design promotes chip clearance in deep-hole applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in cast iron and steel workpieces. The 0.6875-inch straight-cylindrical shank is compatible with standard three-jaw drill chucks accepting up to 11\/16 inch shank diameter on drill presses, machining centers, and heavy-duty portable drills.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eSecure the shank fully in the drill chuck and verify runout before drilling. Use appropriate cutting fluid or coolant for steel applications to extend tool life and prevent work hardening. Ensure the workpiece is firmly clamped before engaging the bit, particularly at extended reach. Comply with applicable shop safety standards and machine manufacturer guidelines when operating at depth.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 11\/16 inch (0.6875 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: 9 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.6875 inches (11\/16 inch)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 118 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Notched\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 (Regular)\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\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\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: +0.0000 to -0.0012 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Cast Iron, Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 120X\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: California Prop 65\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Application\u003c\/strong\u003e: Long Reach Drilling\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Grade\u003c\/strong\u003e: General Purpose\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: CHICAGO-LATROBE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 50639\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CHICAGO-LATROBE","offers":[{"title":"Default Title","offer_id":51734358032690,"sku":"50639","price":125.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6a9d9c629d17e1563f51ca8c920fc284_afa4902f-3c9d-48c2-81c7-d904c09a88e1.jpg?v=1788762671","url":"https:\/\/voomisupply.com\/products\/chicago-latrobe-50639-extra-length-drill-bit-11-16-in-hss","provider":"Voomi Supply","version":"1.0","type":"link"}