{"product_id":"sumitomo-u101155-solid-carbide-screw-machine-drill-bit","title":"Sumitomo U101155 Solid Carbide Screw Machine Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SUMITOMO U101155 is a screw machine length drill bit engineered for high-performance drilling in demanding industrial and machining applications. Built from solid carbide with a coated finish, this bit delivers the rigidity and wear resistance required when drilling into cast iron and steel. It features a 135-degree split-point angle that reduces walking and minimizes thrust force at entry. The straight-cylindrical shank measures 1.9685 inches in length and fits standard drill chucks without adapters. At 3.6614 inches overall length and 0.397 inches in diameter, it is suited for precision work where dimensional accuracy and repeatability are critical. Machinists, tool-and-die shops, and production floor operators are the primary users of this tool.\u003c\/p\u003e\u003cp\u003eThis drill bit is designed for use in CNC machining centers, drill presses, and manual milling setups where short, rigid tooling is preferred. The screw machine length profile keeps deflection low and improves hole straightness in materials such as cast iron and steel. The MDW-GS series uses a tapered web configuration to improve chip evacuation and reduce heat buildup at the cutting zone. It is sold individually and is appropriate for production drilling, prototype work, and maintenance machining environments where solid carbide tooling is specified.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction provides rigidity and extended tool life in ferrous materials\u003c\/li\u003e\n\u003cli\u003e135-degree split-point angle reduces entry thrust and minimizes workpiece walking\u003c\/li\u003e\n\u003cli\u003eCoated finish improves lubricity and wear resistance during high-cycle drilling\u003c\/li\u003e\n\u003cli\u003eTapered web configuration promotes efficient chip flow and reduces heat buildup\u003c\/li\u003e\n\u003cli\u003eScrew machine length profile increases stiffness and improves hole accuracy\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank compatible with standard drill chucks and collet holders\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style screw machine length drill bit suitable for use in CNC machining centers and drill press setups requiring solid carbide tooling in the 0.3500 to 0.4000 inch diameter range.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use of this drill bit should be performed by qualified machinists familiar with carbide tooling requirements. Secure the shank fully in the chuck or collet before operation and verify runout is within acceptable tolerance before cutting. Carbide tooling is brittle and should not be used in setups with excessive vibration or interrupted cuts unless the application specifically supports it. Power down and de-energize the machine spindle completely before changing or inspecting tooling.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.397 inches (10.08 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.6614 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 1.6142 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.9685 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 1.0189 inches (25.88 mm)\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: 0.0827 inches (2.10 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: 2xD\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\u003eTool Material\u003c\/strong\u003e: Solid Carbide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoating\/Finish\u003c\/strong\u003e: Coated\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\u003ePrimary Workpiece Material\u003c\/strong\u003e: Cast Iron, Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter Tolerance\u003c\/strong\u003e: h8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size Range\u003c\/strong\u003e: 0.3500 to 0.4000 inches (9.50 to 11.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: MDW-GS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.25 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: U101155\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SUMITOMO","offers":[{"title":"Default Title","offer_id":51728508354866,"sku":"U101155","price":195.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/4c6747cc76b31daad4fdbd765e5e9bd7.jpg?v=1788692374","url":"https:\/\/voomisupply.com\/products\/sumitomo-u101155-solid-carbide-screw-machine-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}