{"product_id":"sumitomo-u103725-jobber-drill-bit-letter-u-solid-carbide","title":"Sumitomo U103725 Jobber Drill Bit Letter U Solid Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SUMITOMO U103725 is a jobber-length drill bit sized to letter U (0.3680 inches) with a 135-degree split-point tip. Constructed from solid carbide and finished with a dual TiAlCr\/TiSi coating, this bit is built for high-performance metal cutting in demanding production environments. The straight-cylindrical shank measures 0.3906 inches in diameter and accepts standard drill chucks. Overall length is 5.3543 inches with a 2.9921-inch flute length, placing this in a 5xD flute-to-diameter ratio. It is part of the MDW-HGS series and is installed by machinists and toolroom technicians running CNC or manual drilling operations on ferrous and specialty metals.\u003c\/p\u003e\u003cp\u003eThis drill bit is rated for cutting cast iron, stainless steel, carbon steel, and high-temperature alloys, corresponding to ISO material codes K, M, P, and S. The coolant-through design delivers cutting fluid directly to the tip, making it well suited for deep-hole applications and high-feed cycles where heat management is critical. The tapered web configuration aids chip evacuation and reduces thrust load. Typical use cases include production drilling on machining centers and drill presses in metalworking shops and manufacturing facilities.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for rigidity and wear resistance in hard metal applications\u003c\/li\u003e\n\u003cli\u003eDual TiAlCr and TiSi coating for heat resistance and extended tool life\u003c\/li\u003e\n\u003cli\u003e135-degree split-point tip reduces walking and lowers thrust at entry\u003c\/li\u003e\n\u003cli\u003eCoolant-through channels deliver fluid directly to the cutting edge\u003c\/li\u003e\n\u003cli\u003eTapered web design promotes efficient chip evacuation\u003c\/li\u003e\n\u003cli\u003eh8 diameter tolerance on the drill tip ensures precise hole sizing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned for use in CNC machining centers and manual drill presses capable of accepting a straight-cylindrical shank with a 0.3906-inch diameter; rated for cast iron, stainless steel, steel, and high-temperature alloy workpieces per ISO material codes K, M, P, and S.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by qualified machinists or toolroom technicians. Secure the straight-cylindrical shank firmly in a compatible drill chuck or collet before operation and verify runout before beginning a cut. Enable coolant-through supply before engaging the spindle to protect the cutting edge and manage chip load. Follow machine manufacturer guidelines for spindle speed and feed rate when drilling hard or abrasive materials.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Letter)\u003c\/strong\u003e: U\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Decimal Inch)\u003c\/strong\u003e: 0.3680 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\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 2.9921 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 5.3543 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.3906 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 2.2047 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Length\u003c\/strong\u003e: 0.0762 inches (1.94 mm)\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\u003eFinish\/Coating\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, High-Temperature Alloys\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Application\u003c\/strong\u003e: Metal Cutting\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: MDW-HGS\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: SUMITOMO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: U103725\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SUMITOMO","offers":[{"title":"Default Title","offer_id":51738376438066,"sku":"U103725","price":279.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/85e8072d1c020b539f0903cd1ae0fa0b.jpg?v=1788798809","url":"https:\/\/voomisupply.com\/products\/sumitomo-u103725-jobber-drill-bit-letter-u-solid-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}