{"product_id":"chicago-latrobe-48237-screw-machine-drill-bit-0-257-in-hss","title":"Chicago-latrobe 48237 Screw Machine Drill Bit 0.257 in Hss","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe CHICAGO-LATROBE 48237 is a screw machine length drill bit designed for heavy-duty drilling in cast iron and steel. Built from high speed steel (HSS) with a coated finish, it features a 135-degree split point that reduces walking and requires less feed pressure at start. The stub-length body is stiffer than jobber-length bits, making it well suited for drill press work and production environments where rigidity and hole accuracy matter. At 0.257 inches in diameter (Letter F), it holds a tight tolerance of +0.0000 to -0.0010 inches. Two spiral flutes with web thinning and a parallel web configuration promote chip evacuation and reduce torque in tougher materials.\u003c\/p\u003e\u003cp\u003eThis bit is used in production machining, maintenance shops, and fabrication environments where short, rigid tooling is preferred. It is rated for ferrous materials including cast iron and steel. The straight-cylindrical shank fits standard drill chucks and collet-style holders without modification. Screw machine length bits like this one are a common choice on drill presses, milling machine setups, and CNC applications requiring reduced runout and improved hole straightness. It is sold individually and packaged as a single unit.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e135-degree split point reduces bit walking and lowers entry force on hard materials\u003c\/li\u003e\n\u003cli\u003eWeb-thinned, parallel web design reduces torque and improves chip flow\u003c\/li\u003e\n\u003cli\u003eHigh speed steel construction with coated finish for extended tool life in steel and cast iron\u003c\/li\u003e\n\u003cli\u003eScrew machine (stub) length provides greater rigidity than jobber-length bits\u003c\/li\u003e\n\u003cli\u003eRight-hand cut with 2 regular spiral flutes for consistent chip evacuation\u003c\/li\u003e\n\u003cli\u003eMeets NAS 907 and ISO standards for dimensional accuracy and tool performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct-use drill bit for production drilling applications in cast iron and steel. Fits any standard drill chuck or collet holder accepting a straight-cylindrical shank at 0.257 inches diameter.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation of this bit is performed by machinists, tool-and-die tradespeople, and maintenance technicians. Secure the shank fully in the chuck or collet before operation and verify runout with a dial indicator on precision work. Power down and lock out the machine before changing bits. Do not exceed the recommended speed and feed range for the workpiece material and bit diameter.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.257 inches (Letter F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 135 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-5\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1-7\/16 inches\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\u003ePoint Type\u003c\/strong\u003e: Split Point\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\u003eDrill Length Type\u003c\/strong\u003e: Screw Machine\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\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: +0.0000 to -0.0010 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecification\u003c\/strong\u003e: NAS 907 \/ NAS, ISO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: 2159\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.3 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: 48237\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"CHICAGO-LATROBE","offers":[{"title":"Default Title","offer_id":51728616128818,"sku":"48237","price":15.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/9d5348c38d79c33a541d8062f70a9670.jpg?v=1788694013","url":"https:\/\/voomisupply.com\/products\/chicago-latrobe-48237-screw-machine-drill-bit-0-257-in-hss","provider":"Voomi Supply","version":"1.0","type":"link"}