{"product_id":"sumitomo-u103686-jobber-drill-bit-3-16-in-solid-carbide","title":"Sumitomo U103686 Jobber Drill Bit 3\/16 in Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe SUMITOMO U103686 is a jobber-length drill bit designed for high-performance metal cutting in demanding industrial and trade applications. It measures 3\/16 inches (0.1875 inches) in diameter with an overall length of 3.8583 inches and a flute length of 1.7323 inches. Constructed from solid carbide and coated with a TiAlCr and TiSi dual-layer finish, it delivers enhanced hardness and heat resistance at the cutting zone. The 135-degree split-point tip reduces walking on entry and minimizes the need for a center punch. A 5xD flute-to-diameter ratio supports chip evacuation in deeper holes. This bit is installed by machinists, tool-and-die tradespeople, and maintenance technicians working with high-strength metals.\u003c\/p\u003e\n\u003cp\u003eThe U103686 is rated for use in cast iron, stainless steel, and carbon steel workpieces, corresponding to material codes K, M, P, and S. The straight-cylindrical shank with a diameter of 0.1875 inches fits standard drill chucks and collet holders. Coolant-through capability makes it well suited for CNC machining centers and gang drilling fixtures where through-spindle or through-tool coolant delivery is available. It is part of the MDW-HGS series, a line built around precision tolerances and consistent performance across production runs in metal fabrication and maintenance repair 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 hard-metal applications\u003c\/li\u003e\n  \u003cli\u003eTiAlCr and TiSi dual coating for elevated heat resistance and extended tool life\u003c\/li\u003e\n  \u003cli\u003e135-degree point angle reduces thrust force and self-centers on entry\u003c\/li\u003e\n  \u003cli\u003eCoolant-through design compatible with through-spindle coolant delivery systems\u003c\/li\u003e\n  \u003cli\u003eTapered web configuration supports chip flow and reduces torque demand\u003c\/li\u003e\n  \u003cli\u003eh8 diameter tolerance for consistent fit in close-tolerance boring and drilling operations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use in cast iron, stainless steel, and carbon steel workpieces (material codes K, M, P, S). Fits standard 3\/16-inch straight-cylindrical drill chucks and collet systems. Part of the SUMITOMO MDW-HGS series covering the 0.1500 to 0.2000 inch diameter range.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eThis drill bit is intended for use by trained machinists and industrial maintenance technicians in CNC or manual drilling equipment. Ensure the spindle and workpiece are properly secured before operation and confirm that coolant supply is active if using through-tool coolant delivery. Solid carbide tooling is brittle and should not be used in setups with excessive runout or unstable fixturing, as lateral shock loads can cause chipping or breakage. Follow the machine manufacturer's recommended speeds and feeds for the workpiece material being drilled.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 3\/16 inches (0.1875 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.8583 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.7323 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 3\/16 inches (0.1875 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 2.0472 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 135 degrees\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrill Point Length\u003c\/strong\u003e: 0.0388 inches (0.99 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 5xD\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\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\u003c\/strong\u003e: TiAlCr and TiSi\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: h8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Cast Iron, Stainless Steel, Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: Yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: MDW-HGS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTool Application\u003c\/strong\u003e: Metal Cutting\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 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: SUMITOMO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: U103686\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SUMITOMO","offers":[{"title":"Default Title","offer_id":51746922463538,"sku":"U103686","price":170.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0c65e874d78cd783fbb24737329f22be.jpg?v=1788874643","url":"https:\/\/voomisupply.com\/products\/sumitomo-u103686-jobber-drill-bit-3-16-in-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}