{"product_id":"chicago-latrobe-49386-screw-machine-drill-bit-0-177in","title":"Chicago-latrobe 49386 Screw Machine Drill Bit 0.177in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe CHICAGO-LATROBE 49386 is a screw machine length drill bit designed for high-production drilling in ferrous metals including cast iron and steel. It measures 0.177 inches (Wire Size 16) in diameter with an overall length of 2-3\/16 inches and a flute length of 1-1\/8 inches. The bit is manufactured from heavy-duty high speed steel with a coated finish for extended tool life. A 135-degree split point reduces walking and breakthrough burr, while the web-thinned, parallel-web construction reduces thrust and improves chip evacuation. The short screw machine length profile increases rigidity and reduces deflection in CNC and turret lathe applications. This bit is sold individually and is built to NAS 907 and ISO standards.\u003c\/p\u003e\u003cp\u003eThis drill bit is suited for production machining environments where rigidity and repeatability matter. The screw machine length format is commonly used in drill presses, turret lathes, CNC machining centers, and automatic screw machines where stub-length tooling minimizes runout. Primary workpiece materials are cast iron and steel. The right-hand spiral flute and straight cylindrical shank allow direct chuck mounting without adapters. The heavy-duty grade and NAS 907 specification make it appropriate for aerospace and industrial manufacturing contexts where dimensional tolerance and consistency are critical.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e0.177 inches diameter, Wire Size 16, with a tight diameter tolerance of +0.0000 to -0.0007 inches\u003c\/li\u003e\n\u003cli\u003e135-degree split point reduces drill walking and lowers required thrust force\u003c\/li\u003e\n\u003cli\u003eWeb-thinned parallel web improves chip flow and reduces heat buildup\u003c\/li\u003e\n\u003cli\u003eScrew machine (stub) length of 2-3\/16 inches overall increases rigidity and minimizes deflection\u003c\/li\u003e\n\u003cli\u003eHeavy-duty high speed steel construction with coated finish for wear resistance\u003c\/li\u003e\n\u003cli\u003eMeets NAS 907 and ISO standards for dimensional and performance consistency\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in standard drill chucks and collets accepting a straight cylindrical shank. Intended for drilling cast iron and steel in production machining applications. Part of Chicago-Latrobe Series 159.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis bit is installed and removed by a licensed machinist or tooling technician using a standard keyed or keyless drill chuck. Ensure the machine spindle is fully stopped and locked out before changing tooling. Verify chuck capacity accommodates the straight cylindrical shank diameter before mounting. Do not exceed the recommended feed and speed parameters for the workpiece material to avoid premature edge failure.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.177 inches (Wire Size 16)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-3\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1-1\/8 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\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpiral Type\u003c\/strong\u003e: Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral\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: 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\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Screw Machine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Performance\u003c\/strong\u003e: Heavy Duty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Parallel, Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\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 -0.0007 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 159\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification\u003c\/strong\u003e: NAS 907, ISO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.0126 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: CHICAGO-LATROBE\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 49386\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CHICAGO-LATROBE","offers":[{"title":"Default Title","offer_id":51748052009266,"sku":"49386","price":44.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f00867f94b3582d6e6934f92ec1257c9.jpg?v=1788888493","url":"https:\/\/voomisupply.com\/products\/chicago-latrobe-49386-screw-machine-drill-bit-0-177in","provider":"Voomi Supply","version":"1.0","type":"link"}