{"product_id":"osg-hp255-7677-carbide-drill-bit-19-5-mm-140-degree","title":"Osg HP255-7677 Carbide Drill Bit 19.5 Mm 140 Degree","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG HP255-7677 is a solid carbide jobber length drill bit engineered for high-performance drilling in demanding production environments. Designed around OSG's HP255 series, this bit features a 19.5 mm (0.7677 inch) cutting diameter, a 140-degree R-thinned point for accurate self-centering entry, and a WD1 coating that extends tool life in ferrous materials. Two spiral flutes with a regular helix evacuate chips efficiently through the full 101 mm flute length. The straight-cylindrical shank measures 20 mm in diameter, making it compatible with standard drill chucks and toolholders. Machinists and CNC operators working in steel, alloy steel, and cast iron will find this bit suited to both manual and automated drilling operations.\u003c\/p\u003e\u003cp\u003eThe HP255-7677 is intended for drilling in steel, alloy steel, and cast iron workpieces at production volumes. It supports blind hole, cross hole, and through-hole drilling applications, and is self-centering by design. The 5xD flute-to-diameter ratio and coolant-through capability make it practical for deeper holes where chip clearance and heat management are critical. This bit is appropriate for job shop, tool room, and automated machining center use.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for rigidity and heat resistance in hard-material drilling\u003c\/li\u003e\n\u003cli\u003eWD1 coating extends wear resistance when cutting steel and cast iron\u003c\/li\u003e\n\u003cli\u003e140-degree R-thinned point promotes self-centering and reduces thrust requirements\u003c\/li\u003e\n\u003cli\u003eCoolant-through design supports deep-hole chip evacuation and thermal control\u003c\/li\u003e\n\u003cli\u003e5xD flute-to-diameter ratio provides adequate chip clearance for blind and cross holes\u003c\/li\u003e\n\u003cli\u003eTapered web with R-thinning reduces walking and improves point stability at entry\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct selection for applications requiring a 19.5 mm solid carbide jobber drill in the OSG HP255 series, with primary workpiece material codes P (steel, alloy steel) and K (cast iron).\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and operation should be performed by qualified machinists or CNC technicians familiar with carbide tooling. Ensure the machine spindle and toolholder are clean and within tolerance before seating the straight-cylindrical shank, as carbide is brittle and sensitive to runout. Power down and lock out the machine before changing or setting tools. Follow the machine tool manufacturer's recommended speeds and feeds for carbide drills in the workpiece material being cut; do not force-feed or operate without adequate coolant flow when using the through-coolant feature.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 19.5 mm (0.7677 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 153 mm (6.02 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 101 mm (3.98 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 20 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Angle\u003c\/strong\u003e: 140 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: R-Thinned\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\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: WD1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 5xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: +0.008 to +0.029 mm\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\u003eTool Application\u003c\/strong\u003e: Blind Hole, Cross Hole, Drilling, Self-Centering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: HP255\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 1.045 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 23241634\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: HP255-7677\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51747538796850,"sku":"HP255-7677","price":1008.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/572ef8849892055a6801dc3158bc150f_760d897a-1b61-4e9f-aad3-652887cbed7f.jpg?v=1788882150","url":"https:\/\/voomisupply.com\/products\/osg-hp255-7677-carbide-drill-bit-19-5-mm-140-degree","provider":"Voomi Supply","version":"1.0","type":"link"}