{"product_id":"osg-hp255-5315-solid-carbide-jobber-drill-bit-13-5-mm","title":"Osg HP255-5315 Solid Carbide Jobber Drill Bit 13.5 Mm","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe OSG HP255-5315 is a solid carbide jobber-length drill bit designed for high-performance drilling in ferrous and hard materials. It runs a 13.5 mm diameter with a 140-degree R-thinned point that promotes self-centering and reduces thrust on entry. The WD1 coating improves wear resistance and heat dissipation during aggressive drilling cycles. With a 124 mm overall length and a 77 mm flute length, this bit handles blind holes, cross holes, and through-hole drilling at a 5xD flute-to-diameter ratio. The straight-cylindrical shank measures 14 mm for secure chuck engagement. Machinists and tool-and-die professionals working in production environments are the primary users.\u003c\/p\u003e\u003cp\u003eThis drill bit is suited for CNC machining centers, drill presses, and production drilling applications where consistent hole quality in steel, alloy steel, and cast iron is required. The regular spiral flute with tapered web and R-thinned geometry evacuates chips efficiently in both blind and through-hole configurations. The coolant-through design supports high-speed, deep-hole drilling strategies where internal coolant delivery is available, reducing heat buildup and extending tool life in demanding ferrous workpiece materials.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for rigidity and wear resistance in hard ferrous materials\u003c\/li\u003e\n\u003cli\u003eWD1 coating for improved heat and abrasion resistance\u003c\/li\u003e\n\u003cli\u003e140-degree R-thinned point for self-centering entry and reduced thrust\u003c\/li\u003e\n\u003cli\u003eCoolant-through design compatible with internal coolant delivery systems\u003c\/li\u003e\n\u003cli\u003e5xD flute-to-diameter ratio supports deeper hole applications\u003c\/li\u003e\n\u003cli\u003eRight-hand cut, regular spiral flute for efficient chip evacuation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in steel, alloy steel, and cast iron workpieces. Suitable for ISO material groups P and K. Fits any chuck or collet accepting a 14 mm straight-cylindrical shank.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis tool is installed by machinists in CNC or manual drilling setups. Ensure the machine spindle and chuck are fully stopped before changing tooling. The straight-cylindrical shank requires a correctly sized chuck or collet to prevent slippage under load. When using the coolant-through feature, confirm that coolant pressure and flow rate are appropriate for the machine and material before beginning the drilling cycle.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 13.5 mm (0.5315 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 124 mm (4.88 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 77 mm (3.03 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 14 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\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: Regular Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\u003c\/strong\u003e: WD1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\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\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 5xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: +0.007 to +0.025 mm\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: 0.44 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: HP255-5315\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51732232503602,"sku":"HP255-5315","price":288.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/572ef8849892055a6801dc3158bc150f_3991630c-7509-4019-b23b-119c65414b98.jpg?v=1788740681","url":"https:\/\/voomisupply.com\/products\/osg-hp255-5315-solid-carbide-jobber-drill-bit-13-5-mm","provider":"Voomi Supply","version":"1.0","type":"link"}