{"product_id":"osg-hp253-3228-screw-machine-drill-bit-0-3228-in-carbide","title":"Osg HP253-3228 Screw Machine Drill Bit 0.3228 in Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG HP253-3228 is a solid carbide screw machine length drill bit designed for high-performance drilling in steel, alloy steel, and cast iron. It measures 0.3228 inches (Letter P, 8.20 mm) in diameter with a 140-degree split point angle and a right-hand spiral flute configuration. The shortened screw machine length body provides greater rigidity compared to jobber-length bits, reducing deflection and improving hole accuracy in tough ferrous materials. This bit includes coolant-through capability, making it well suited for CNC machining centers and automated drilling operations where through-spindle coolant is available. It weighs 0.145 pounds.\u003c\/p\u003e\n\u003cp\u003eThis drill bit is built for production drilling applications in steel, alloy steel, and cast iron. The screw machine length format is a standard choice for turret lathes, CNC machining centers, and short-hole drilling fixtures where a stiffer tool is needed to maintain position and reduce runout. The straight-cylindrical shank seats in standard drill chucks and collets. The 3xD flute-to-diameter ratio supports chip evacuation in moderate-depth holes typical of production shop environments.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction for rigidity and wear resistance in ferrous materials\u003c\/li\u003e\n  \u003cli\u003e140-degree drill point angle reduces thrust and improves self-centering on entry\u003c\/li\u003e\n  \u003cli\u003eCoolant-through design supports through-spindle coolant delivery for heat management and chip flushing\u003c\/li\u003e\n  \u003cli\u003eR-thinned web with tapered web configuration reduces cutting resistance at the chisel edge\u003c\/li\u003e\n  \u003cli\u003eRight-hand, regular spiral flute geometry promotes consistent chip evacuation\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank compatible with standard chucks and collets\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for drilling steel, alloy steel, and cast iron. Shank diameter is 10.00 mm (approximately 0.394 inches); confirm chuck or collet capacity before installation. Part of the OSG HP253 series, covering the 0.3000 to 0.3500 inch decimal inch size range.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists and tool-and-die professionals on CNC or manual machine tools. Ensure the machine spindle is fully stopped and the tool is properly torqued in the chuck or collet before operation. Verify coolant-through passages are clear and coolant pressure is set per machine specifications before initiating a drilling cycle. Do not run this bit in non-ferrous materials or stainless without confirming suitability with the manufacturer, as coating and geometry are optimized for the listed workpiece materials.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.3228 inches (8.20 mm, Letter P)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 140 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 89.00 mm (approximately 3.50 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 47.00 mm (approximately 1.85 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 10.00 mm (approximately 0.394 inches)\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: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: Coated\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: Regular Spiral\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Thinning\u003c\/strong\u003e: R-Thinned, Tapered\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\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel, Alloy Steel, Cast Iron\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: +0.006 to +0.021 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSize Range\u003c\/strong\u003e: 0.3000 to 0.3500 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HP253\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.145 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: OSG\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: HP253-3228\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51736326013234,"sku":"HP253-3228","price":123.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/8f9b99140347189896b77507a890d76e.jpg?v=1788777238","url":"https:\/\/voomisupply.com\/products\/osg-hp253-3228-screw-machine-drill-bit-0-3228-in-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}