{"product_id":"chicago-latrobe-49416-screw-machine-drill-bit-0-081in-hss","title":"Chicago-latrobe 49416 Screw Machine Drill Bit 0.081in Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe CHICAGO-LATROBE 49416 is a screw machine length drill bit designed for high-speed steel cutting in demanding production and maintenance environments. Built to Series 159 specifications under NAS 907 designation, this bit features a 135-degree split point and web-thinned geometry that reduces thrust and improves hole entry accuracy. At 0.081 inches in diameter (Wire Size 46), the stubby screw machine length provides added rigidity compared to jobber-length bits, making it well suited for close-tolerance drilling where deflection must be minimized. Licensed tradespeople and machining technicians working with ferrous metals rely on this geometry for consistent, repeatable results.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is rated for primary use in cast iron and steel workpieces and is built to heavy-duty performance standards, making it appropriate for production drilling, maintenance repair, and tool-room applications. The coated high speed steel construction extends cutting life compared to uncoated HSS in repetitive drilling cycles. The straight-cylindrical shank accepts standard drill chucks, making this bit compatible with drill presses, CNC drilling heads, hand drills, and screw machine spindles. It is sold individually and is available in multiples of 12 per order.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e135-degree split point with web-thinned geometry reduces entry thrust and walking\u003c\/li\u003e\n  \u003cli\u003eScrew machine (stub) length provides increased rigidity and reduced deflection over jobber-length equivalents\u003c\/li\u003e\n  \u003cli\u003eCoated high speed steel construction for extended tool life in steel and cast iron\u003c\/li\u003e\n  \u003cli\u003eTwo-flute regular spiral design promotes efficient chip evacuation in through-hole drilling\u003c\/li\u003e\n  \u003cli\u003eDiameter tolerance held to +0.0000 to -0.0005 inches for close-fit hole applications\u003c\/li\u003e\n  \u003cli\u003eMeets NAS 907 and ISO standards for consistent dimensional conformance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement and standard production drill bit for use in cast iron and steel applications; the straight-cylindrical shank fits any standard drill chuck or screw machine spindle accepting a 0.081-inch shank diameter.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis bit is installed and operated by machinists, tool-room technicians, and maintenance tradespeople using drill presses, hand drills, or CNC equipment. Secure the straight shank firmly in a keyed or keyless chuck before operation and confirm chuck runout is within acceptable limits to preserve the tight diameter tolerance. Do not exceed the recommended feed and speed parameters for the workpiece material to avoid premature cutting-edge breakdown. Inspect the split point for chipping or wear before each use and replace the bit if the point geometry is compromised.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.081 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWire Size\u003c\/strong\u003e: 46\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 0.75 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.0 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.081 inches (2.06 mm)\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\u003eWeb Configuration\u003c\/strong\u003e: Parallel, Web-Thinned\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\u003eCutting Direction\u003c\/strong\u003e: Right Hand\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\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\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\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: 0.0026 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: 49416\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CHICAGO-LATROBE","offers":[{"title":"Default Title","offer_id":51747754213682,"sku":"49416","price":35.33,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d82264344c526d796394e842f41dbc32.jpg?v=1788885088","url":"https:\/\/voomisupply.com\/products\/chicago-latrobe-49416-screw-machine-drill-bit-0-081in-hss","provider":"Voomi Supply","version":"1.0","type":"link"}