{"product_id":"sumitomo-u103705-jobber-drill-bit-letter-h-solid-carbide","title":"Sumitomo U103705 Jobber Drill Bit Letter H Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SUMITOMO U103705 is a jobber-length drill bit sized at letter H (0.2660 inches diameter) from the MDW-HGS series. It is manufactured from solid carbide and features a dual coating of TiAlCr and TiSi for extended tool life in demanding metal-cutting applications. The 135-degree split point reduces thrust and helps the bit self-center on entry. With an overall length of 4.2913 inches and a straight-cylindrical shank, this bit is designed for use in CNC machining centers and precision drilling operations. It is installed and operated by machinists and tool-and-die professionals working in production environments.\u003c\/p\u003e\u003cp\u003eThis drill bit is suited for cutting cast iron, stainless steel, carbon steel, and other ferrous alloys. The 5xD flute-to-diameter ratio provides adequate chip evacuation in deeper hole applications. Coolant-through capability makes it compatible with through-spindle coolant systems, helping to flush chips and manage heat at the cutting edge. The h8 diameter tolerance on the drill body supports close-tolerance hole production. Typical applications include production drilling in aerospace, automotive, and general metalworking shops where tool longevity and hole quality are critical.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for rigidity and heat resistance in hard-metal drilling\u003c\/li\u003e\n\u003cli\u003eTiAlCr and TiSi dual coating for extended wear resistance and thermal protection\u003c\/li\u003e\n\u003cli\u003e135-degree drill point angle for reduced entry thrust and self-centering performance\u003c\/li\u003e\n\u003cli\u003eCoolant-through design compatible with through-spindle coolant delivery systems\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank with h8 tolerance for consistent runout in standard collets and chucks\u003c\/li\u003e\n\u003cli\u003eTapered web configuration supports chip flow in 5xD depth-of-cut applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in CNC machining centers and drill presses equipped with through-spindle coolant and standard collet or chuck toolholding systems accepting a 0.2812-inch shank diameter. Suitable for primary workpiece material codes K, M, P, and S, corresponding to cast iron, stainless steel, steel, and superalloys.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eThis bit is installed by qualified machinists in collet chucks or drill chucks rated for the 0.2812-inch shank diameter. Ensure the spindle and coolant system are fully de-energized and depressurized before changing tooling. Verify runout with a dial indicator after seating to maintain hole-diameter tolerance. Do not exceed the recommended depth-of-cut ratio for the series without verifying chip evacuation performance.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: H\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.2660 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\u003eOverall Length\u003c\/strong\u003e: 4.2913 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2.2047 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 2.0866 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.2812 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Length\u003c\/strong\u003e: 0.0551 inches (1.40 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\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\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\u003eDiameter Tolerance\u003c\/strong\u003e: h8\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: Cast Iron, Stainless Steel, Steel\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: 0.1 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: U103705\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SUMITOMO","offers":[{"title":"Default Title","offer_id":51730464178482,"sku":"U103705","price":194.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/b998c70ad1269b06b77caab862f98be8.jpg?v=1788717907","url":"https:\/\/voomisupply.com\/products\/sumitomo-u103705-jobber-drill-bit-letter-h-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}