{"product_id":"osg-hp243-3150-screw-machine-drill-bit-0-315-in-carbide","title":"Osg HP243-3150 Screw Machine Drill Bit 0.315 in Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG HP243-3150 is a solid carbide screw machine length drill bit engineered for high-performance drilling in demanding production environments. At 0.315 inches (8.00 mm) in diameter, it features a 140-degree drill point angle, a right-hand spiral flute configuration, and an R-thinned, tapered web for improved chip evacuation and reduced thrust at entry. The straight-cylindrical shank provides secure seating in standard drill chucks and collet systems. This bit is suited for machinists and tool-and-die professionals who require tight tolerances and consistent hole quality in ferrous materials.\u003c\/p\u003e\n\u003cp\u003eThe HP243-3150 is designed for drilling steel, alloy steel, and cast iron in screw machine and production drilling applications. Its screw machine (stub) length format provides added rigidity compared to jobber-length bits, making it well suited for CNC machining centers, turret lathes, and automatic screw machines where deflection control and repeatability are critical. The 3xD flute-to-diameter ratio supports chip clearance in through-hole and blind-hole operations at moderate depths.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction for extended tool life in ferrous and hard materials\u003c\/li\u003e\n  \u003cli\u003e140-degree split point angle reduces walking and lowers entry thrust\u003c\/li\u003e\n  \u003cli\u003eR-thinned, tapered web improves chip flow and reduces cutting resistance\u003c\/li\u003e\n  \u003cli\u003eScrew machine length body provides greater rigidity than jobber-length bits\u003c\/li\u003e\n  \u003cli\u003eRight-hand, 2-flute spiral design with coated finish for improved surface lubricity\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical shank compatible with standard drill chucks and collet holders\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in steel, alloy steel, and cast iron workpiece materials. Part of the OSG HP243 series, covering the 0.3000 to 0.3500 inch (8.00 to 9.50 mm) diameter range. Fits standard straight-shank drill chucks and collet systems accepting an 8.00 mm shank.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and tool changes should be performed by a qualified machinist with the machine powered down and locked out per facility lockout\/tagout procedures. Ensure the shank is fully seated and the chuck or collet is torqued to the toolholder manufacturer specification before operation. Coolant-through is not supported on this bit, so external coolant or cutting fluid should be applied as appropriate for the workpiece material. Inspect the cutting edges for chipping or wear before each use, as carbide is brittle and susceptible to damage from improper handling or interrupted cuts.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.315 inches (8.00 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 79.00 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 41.00 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\u003eFlute Type\u003c\/strong\u003e: Spiral, Regular\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 8.00 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Coated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered, R-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\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\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: +0.006 to +0.021 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Screw Machine\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: 0.075 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: HP243-3150\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51730709774642,"sku":"HP243-3150","price":91.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6d97f9cd405d800eb1824085b2319d81.jpg?v=1788721615","url":"https:\/\/voomisupply.com\/products\/osg-hp243-3150-screw-machine-drill-bit-0-315-in-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}