{"product_id":"sumitomo-u101024-screw-machine-drill-bit-3-80mm-carbide","title":"Sumitomo U101024 Screw Machine Drill Bit 3.80mm Carbide","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SUMITOMO U101024 is a screw machine length solid carbide drill bit designed for high-productivity drilling in steel and cast iron. At 3.80 mm (0.1495 inches) in diameter, it features a 135-degree web-thinned point that reduces entry force and improves centering accuracy. The DEX multi-layer coating extends tool life in ferrous materials. With an overall length of 2.126 inches and a straight cylindrical shank diameter of 0.1562 inches, this bit is sized for short, rigid setups where runout control matters. It is installed by machinists and tool-and-die professionals working on CNC drilling operations, drill presses, and screw machines.\u003c\/p\u003e\u003cp\u003eThis drill bit is built for drilling steel and cast iron in production environments where short, stiff tooling is required. The screw machine length format keeps the tool close to the spindle, improving rigidity and hole accuracy at higher feed rates. The 2xD flute-to-diameter ratio suits shallow-to-moderate hole depths. Maximum drilling depth is 0.6025 inches (15.30 mm). The regular spiral flute geometry promotes chip evacuation in ferrous workpieces without coolant-through capability, making it compatible with flood coolant or dry cutting setups where external coolant delivery is used.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for rigidity and wear resistance in ferrous materials\u003c\/li\u003e\n\u003cli\u003e135-degree web-thinned point reduces thrust force and improves self-centering\u003c\/li\u003e\n\u003cli\u003eDEX multi-layer proprietary coating for extended tool life in steel and cast iron\u003c\/li\u003e\n\u003cli\u003eScrew machine length (2.126 inches OAL) for maximum spindle rigidity\u003c\/li\u003e\n\u003cli\u003eh8 diameter tolerance for consistent fit in precision drill chucks and collets\u003c\/li\u003e\n\u003cli\u003e2xD flute ratio supports chip clearance in shallow drilling applications\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement for screw machine length carbide drill bits in the MDW-GS series, suitable for CNC machining centers, drill presses, and screw machines configured for 3.80 mm diameter tooling in steel and cast iron applications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a qualified machinist with the spindle fully powered down and locked out before tool changes. Secure the straight shank in a precision drill chuck or collet rated for the shank diameter of 0.1562 inches, ensuring full engagement depth to prevent pullout under load. Do not exceed the maximum drilling depth of 0.6025 inches without retracting to clear chips. Inspect the cutting edge and coating condition before each use; carbide is brittle and susceptible to damage from improper handling or side loading.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 3.80 mm (0.1495 inches)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.126 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 0.8268 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.2992 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Diameter\u003c\/strong\u003e: 0.1562 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Type\u003c\/strong\u003e: Straight-Cylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 135 degrees\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoint Type\u003c\/strong\u003e: Web-Thinned\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 0.6025 inches (15.30 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Length\u003c\/strong\u003e: 0.0310 inches (0.79 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 Type\u003c\/strong\u003e: Regular Spiral\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 2xD\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeb Configuration\u003c\/strong\u003e: Tapered\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: DEX Multi-layer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCutting Direction\u003c\/strong\u003e: Right Hand\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrimary Workpiece Material\u003c\/strong\u003e: Steel, Cast Iron\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Length Type\u003c\/strong\u003e: Screw Machine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter Tolerance\u003c\/strong\u003e: h8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: MDW-GS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.154 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: SUMITOMO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: U101024\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SUMITOMO","offers":[{"title":"Default Title","offer_id":51746595471666,"sku":"U101024","price":110.16,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c0ca56efb48e8007efd689f0ff98839b_15bb7470-5f71-4825-8018-c863c26aba4d.jpg?v=1788871603","url":"https:\/\/voomisupply.com\/products\/sumitomo-u101024-screw-machine-drill-bit-3-80mm-carbide","provider":"Voomi Supply","version":"1.0","type":"link"}