{"product_id":"chicago-latrobe-50424-taper-length-drill-bit-0-3970-in","title":"Chicago-latrobe 50424 Taper Length Drill Bit 0.3970 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe CHICAGO-LATROBE 50424 is a taper length, straight-shank twist drill bit designed for general-purpose hole making in metalworking applications. Built from high speed steel with a coated finish, this bit features a 118-degree standard point angle and a web-thinned, tapered web configuration that reduces cutting effort at entry. The 0.3970-inch diameter corresponds to letter size X. With a 7-inch overall length and a 4.375-inch flute length, it reaches deeper than a jobber-length bit while maintaining rigidity. Licensed HVAC, plumbing, and electrical tradespeople as well as machining professionals will recognize this as a dependable general-purpose option for production or maintenance drilling.\u003c\/p\u003e\u003cp\u003eThis drill bit is suited for drilling alloy steel, carbon steel, and cast iron in both shop and field environments. The right-hand spiral flute evacuates chips efficiently during through-hole and blind-hole operations. The straight shank, measuring 0.3970 inches in diameter and 2.625 inches in length, seats securely in standard three-jaw drill chucks found on benchtop drill presses, handheld drills, and magnetic base drills. It is sold as a single unit and is appropriate for general-purpose metalworking tasks where taper length reach is required.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eLetter size X, 0.3970-inch diameter with a tight tolerance of +0.0000 to -0.0010 inches\u003c\/li\u003e\n\u003cli\u003e118-degree standard point angle with web-thinned, tapered web for easier starting\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction with coated finish for improved surface hardness and wear resistance\u003c\/li\u003e\n\u003cli\u003eTaper length body at 7 inches overall with a 4.375-inch spiral flute for extended reach\u003c\/li\u003e\n\u003cli\u003eRight-hand cut with regular spiral flute for efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003eStraight shank compatible with standard drill chucks  -  no coolant-through requirement\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in alloy steel, carbon steel, and cast iron drilling applications. Fits any standard three-jaw chuck sized to accept a 0.3970-inch straight shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by a machinist, maintenance technician, or trade professional using a drill press, handheld drill, or magnetic base drill. Secure the shank fully in the chuck and verify runout before drilling. Always power down and de-energize the tool before changing bits. Use appropriate cutting fluid or lubrication when drilling steel to extend bit life and maintain hole tolerance.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: X\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.3970 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: +0.0000 to -0.0010 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 7 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 4.375 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.3970 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 2.625 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: Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Type\u003c\/strong\u003e: Spiral, Regular\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, Web-Thinned\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\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\u003eMaterial Application\u003c\/strong\u003e: Alloy Steel, Carbon Steel, Cast Iron\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: 120\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Performance\u003c\/strong\u003e: General Purpose\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: 50424\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CHICAGO-LATROBE","offers":[{"title":"Default Title","offer_id":51740548235570,"sku":"50424","price":37.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/68372cefd63d069a762a3d1ed52d9074.jpg?v=1788825864","url":"https:\/\/voomisupply.com\/products\/chicago-latrobe-50424-taper-length-drill-bit-0-3970-in","provider":"Voomi Supply","version":"1.0","type":"link"}