{"product_id":"osg-hp255-1693-solid-carbide-jobber-drill-bit-4-3-mm","title":"Osg HP255-1693 Solid Carbide Jobber Drill Bit 4.3 Mm","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe OSG HP255-1693 is a solid carbide jobber-length drill bit engineered for high-performance drilling in ferrous materials. Ground to a 140-degree point angle with R-thinned web geometry, it self-centers on entry and reduces thrust in hard workpieces. The WD1 coating extends tool life in steel, alloy steel, and cast iron applications. At 74 mm overall length with a 36 mm flute length and a 5xD flute-to-diameter ratio, this bit delivers consistent chip evacuation in moderate-depth holes. The straight-cylindrical shank measures 6 mm in diameter for secure chuck engagement. Installation is handled by machinists and CNC operators in job shop and production environments.\u003c\/p\u003e\n\u003cp\u003eThe HP255-1693 is suited for drilling blind holes, cross holes, and through holes in steel, alloy steel, and cast iron. Its coolant-through capability supports higher feed rates and longer tool life when used in machining centers or CNC drills equipped with internal coolant delivery. The regular spiral and tapered web configuration make it a reliable choice for production runs and precision work where consistent hole quality is required.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eSolid carbide construction for rigidity and wear resistance in hard ferrous materials\u003c\/li\u003e\n  \u003cli\u003eWD1 coating for extended tool life in steel and cast iron\u003c\/li\u003e\n  \u003cli\u003e140-degree point angle with R-thinned web for self-centering and reduced entry thrust\u003c\/li\u003e\n  \u003cli\u003eCoolant-through design compatible with internal coolant CNC setups\u003c\/li\u003e\n  \u003cli\u003eStraight-cylindrical 6 mm shank fits standard drill chucks and collet holders\u003c\/li\u003e\n  \u003cli\u003eRated for blind hole, cross hole, drilling, and self-centering applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in machining centers, CNC drill presses, and manual drill presses equipped with a 6 mm or compatible collet or chuck. Primary workpiece materials are steel, alloy steel, and cast iron (ISO material codes P and K).\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall and remove this tool only with the machine powered off and spindle fully stopped. Secure the straight-cylindrical shank firmly in a collet, drill chuck, or tool holder rated for the shank diameter before starting the spindle. When using coolant-through capability, verify that the machine spindle and toolholder are compatible with internal coolant delivery before operation. Handling solid carbide tooling requires care to avoid chipping the cutting edges during setup and storage.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 4.3 mm (0.1693 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 74 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 36 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 6 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\u003ePoint Type\u003c\/strong\u003e: R-Thinned\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Material\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\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\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 5xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: +0.004 to +0.016 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: 0.045 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: HP255-1693\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OSG","offers":[{"title":"Default Title","offer_id":51750618464562,"sku":"HP255-1693","price":92.87,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/45c90d8d2037ea81476e019199a0d611.jpg?v=1788917449","url":"https:\/\/voomisupply.com\/products\/osg-hp255-1693-solid-carbide-jobber-drill-bit-4-3-mm","provider":"Voomi Supply","version":"1.0","type":"link"}