{"product_id":"chicago-latrobe-49097-screw-machine-drill-bit-0-144-in","title":"Chicago-latrobe 49097 Screw Machine Drill Bit 0.144 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe CHICAGO-LATROBE 49097 is a screw machine length drill bit designed for general-purpose drilling in a range of materials. Built from high speed steel with a bright\/uncoated finish, it measures 0.144 inches in diameter and carries a wire gauge designation of #27. The 118-degree standard point angle provides a reliable starting geometry on flat and curved surfaces. With a 2-flute spiral flute design and a straight-cylindrical shank, this bit fits standard drill chucks without adapters. It is a left-hand cut tool, making it particularly useful for removing broken fasteners or reverse-drilling applications where right-hand bits are not appropriate. Machinists, maintenance technicians, and metalworking professionals are the primary installers and users.\u003c\/p\u003e\n\u003cp\u003eThis bit is suited for drilling aluminum, copper, magnesium, slate, thermoplastic, and wood. The screw machine length format — shorter overall than a jobber-length bit — provides added rigidity and reduced deflection, making it well suited for drill press, CNC, and turret lathe applications where chuck clearance and runout control matter. The web-thinned, parallel web configuration reduces thrust force at the cutting tip, which is especially beneficial when working in softer non-ferrous metals and plastics. It is a general-purpose grade bit appropriate for both production and maintenance environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eLeft-hand cut spiral flute for reverse-drilling and broken fastener extraction\u003c\/li\u003e\n  \u003cli\u003eHigh speed steel construction with bright\/uncoated finish for general-purpose use\u003c\/li\u003e\n  \u003cli\u003e118-degree standard point angle for broad material compatibility\u003c\/li\u003e\n  \u003cli\u003eWeb-thinned, parallel web reduces cutting thrust on entry\u003c\/li\u003e\n  \u003cli\u003eScrew machine length body adds rigidity and reduces deflection vs. jobber length\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank fits standard 3-jaw and collet-style drill chucks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in drill presses, CNC machines, turret lathes, and hand drills that accept straight-cylindrical shank bits. Compatible primary workpiece materials include aluminum, copper, magnesium, slate, thermoplastic, and wood. Part of the CHICAGO-LATROBE Series 157L screw machine drill line.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis is a left-hand cut bit — confirm spindle rotation direction before use, as running it in a standard right-hand drill will not produce a cut and may damage the bit or workpiece. Secure the workpiece firmly before drilling to prevent material from spinning with the bit, particularly in softer materials. Use a center punch to establish a pilot point and minimize walking on hard or smooth surfaces. Follow applicable machine guarding and PPE requirements per shop safety standards when operating drilling equipment.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.144 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWire Gauge Size\u003c\/strong\u003e: #27\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-1\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 118 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Left Hand\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\u003ePoint Type\u003c\/strong\u003e: Standard\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Parallel, Web-Thinned\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: Bright\/Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Screw Machine\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\u003ePrimary Workpiece Materials\u003c\/strong\u003e: Aluminum, Copper, Magnesium, Slate, Thermoplastic, Wood\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ISO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 157L\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.0085 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: 49097\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CHICAGO-LATROBE","offers":[{"title":"Default Title","offer_id":51750767100210,"sku":"49097","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/a1f84b58c092db729b7ee897bc1e95d3.jpg?v=1788919523","url":"https:\/\/voomisupply.com\/products\/chicago-latrobe-49097-screw-machine-drill-bit-0-144-in","provider":"Voomi Supply","version":"1.0","type":"link"}