{"product_id":"chicago-latrobe-49427-screw-machine-drill-bit-0-043-in","title":"Chicago-latrobe 49427 Screw Machine Drill Bit 0.043 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe CHICAGO-LATROBE 49427 is a screw machine length drill bit designed for high-speed steel cutting in demanding shop and field applications. It carries a wire gauge size of 57 (0.0430 inches decimal) and features a 135-degree split point for accurate self-starting without a center punch. The two-flute spiral design with web thinning reduces thrust and promotes clean chip evacuation. At 1-3\/8 inches overall length with a 1\/2-inch flute length, this stub-length bit provides added rigidity compared to jobber-length bits, making it well-suited for close-tolerance drilling in tight spaces. It conforms to NAS 907 and ISO standards and is rated for heavy-duty tool performance.\u003c\/p\u003e\n\u003cp\u003eThis bit is intended for drilling cast iron and steel in production machining, maintenance, and repair environments. The screw machine (stub) length format reduces deflection and chatter when drilling small-diameter holes on drill presses, CNC machines, turret lathes, and manual mills. The straight-cylindrical shank fits standard drill chucks without adapters. Its coated high speed steel construction extends tool life when running at elevated speeds in ferrous materials. Machinists, tool and die workers, and industrial maintenance technicians are the primary installers and users of this bit.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eWire size 57 (0.0430 inches) with a tight diameter tolerance of +0.0000 to -0.0005 inches\u003c\/li\u003e\n  \u003cli\u003e135-degree split point for self-centering starts on ferrous materials\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned parallel web reduces drilling thrust and heat buildup\u003c\/li\u003e\n  \u003cli\u003eScrew machine (stub) length at 1-3\/8 inches overall for maximum rigidity\u003c\/li\u003e\n  \u003cli\u003eCoated high speed steel construction rated for heavy-duty tool performance\u003c\/li\u003e\n  \u003cli\u003eMeets NAS 907 and ISO standards for dimensional and performance compliance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct substitute for screw machine length drill bits in wire size 57 applications involving cast iron and steel workpieces. Fits any standard drill chuck accepting a straight-cylindrical shank at this diameter.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis bit is installed and used by machinists and industrial maintenance technicians on drill presses, lathes, and milling machines. Secure the straight shank firmly in the chuck and verify runout before drilling. Use appropriate cutting fluid or coolant for ferrous materials to extend tool life, noting this bit does not support coolant-through delivery. Inspect the cutting edges before each use and replace the bit if chipping or excessive wear is observed.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: 57\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.0430 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.375 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 0.5 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\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\u003ePoint Type\u003c\/strong\u003e: Split\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Parallel, Web-Thinned\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: Coated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Performance\u003c\/strong\u003e: Heavy-Duty\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\u003eDiameter Tolerance\u003c\/strong\u003e: +0.0000 to -0.0005 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Screw Machine\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: 159\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSpecification Number\u003c\/strong\u003e: NAS 907\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: NAS, ISO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.001 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: CHICAGO-LATROBE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 49427\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CHICAGO-LATROBE","offers":[{"title":"Default Title","offer_id":51731802718514,"sku":"49427","price":33.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ef6ea3b9a165923fc8bb7bba01e2dad3.jpg?v=1788735105","url":"https:\/\/voomisupply.com\/products\/chicago-latrobe-49427-screw-machine-drill-bit-0-043-in","provider":"Voomi Supply","version":"1.0","type":"link"}