{"product_id":"osg-hp243-2520-screw-machine-drill-bit-0-252in-carbide","title":"Osg HP243-2520 Screw Machine Drill Bit 0.252in Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG HP243-2520 is a solid carbide screw machine length drill bit designed for high-performance drilling in steel, alloy steel, and cast iron. With a 0.252-inch (6.40 mm) diameter and a 140-degree split point, this bit delivers accurate starts and clean through-holes in demanding ferrous materials. The R-thinned web reduces thrust load and improves chip evacuation. At 3.11 inches (79.00 mm) overall length with a 1.34-inch (34.00 mm) flute length, the screw machine format provides added rigidity over jobber-length bits, making it well suited to CNC machining centers, drill presses, and automatic screw machines running production work.\u003c\/p\u003e\u003cp\u003eThis bit fits typical production and job shop environments where short, rigid tooling is required to maintain hole tolerance in ferrous workpieces. The straight-cylindrical shank measures 8.00 mm (0.315 inches) in diameter and seats directly into standard drill chucks or collet holders. The 3xD flute-to-diameter ratio supports chip clearing in moderate-depth holes. Primary workpiece materials include steel, alloy steel, and cast iron. This bit is part of the OSG HP243 series, which targets high-performance drilling applications where tool life and dimensional accuracy are priorities.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for increased rigidity and wear resistance in ferrous materials\u003c\/li\u003e\n\u003cli\u003e140-degree drill point angle for self-centering starts and reduced walking\u003c\/li\u003e\n\u003cli\u003eR-thinned web reduces axial thrust and improves chip flow\u003c\/li\u003e\n\u003cli\u003eScrew machine (stub) length provides greater rigidity than jobber-length equivalents\u003c\/li\u003e\n\u003cli\u003e2-flute spiral design with regular helix for efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003eCoated finish extends tool life in steel and alloy steel applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for drilling steel, alloy steel, and cast iron workpieces; compatible with standard drill chucks and collet holders accepting an 8.00 mm straight-cylindrical shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and tool changes should be performed with the machine fully powered down and locked out per applicable shop safety procedures. Ensure the shank is fully seated and the chuck or collet is tightened to the tool holder manufacturer's specification before running the spindle. Solid carbide tooling is brittle — avoid side loading or impact that could chip the cutting edges. Verify RPM and feed rate settings are appropriate for the workpiece material and hole depth before beginning a cut.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.252 inches (6.40 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.11 inches (79.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.34 inches (34.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.315 inches (8.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 140 degrees\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\u003eWeb Configuration\u003c\/strong\u003e: Tapered\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Thinning\u003c\/strong\u003e: R-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Screw Machine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Coated\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel, Alloy 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\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: +0.006 to +0.021 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HP243\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.095 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: OSG\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: HP243-2520\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51738735706418,"sku":"HP243-2520","price":80.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/303e5abbeef1228ea36f6a6a51ae1cde_8f5feca8-79d3-42b0-a02c-653a13d1562d.jpg?v=1788803656","url":"https:\/\/voomisupply.com\/products\/osg-hp243-2520-screw-machine-drill-bit-0-252in-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}