{"product_id":"sumitomo-u101031-solid-carbide-drill-bit-0-159-in","title":"Sumitomo U101031 Solid Carbide Drill Bit 0.159 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SUMITOMO U101031 is a screw machine length drill bit built for precision drilling in demanding trade and industrial applications. Manufactured from solid carbide with a coated finish, this bit measures 0.159 inches in diameter and features a 135-degree drill point angle for accurate, self-centering starts with minimal walking. The straight-cylindrical shank and tapered web configuration support rigid tool holding and efficient chip evacuation. With coolant-through capability, it is suited for use in CNC machining centers and production drilling environments where heat management is critical. The two-flute design paired with two margins delivers clean, consistent hole geometry in tough materials.\u003c\/p\u003e\u003cp\u003eThis drill bit is designed for production and job shop environments drilling into cast iron, stainless steel, and steel. Its screw machine length profile makes it a fit for tight-clearance setups and short-reach applications where stub-length rigidity is needed without sacrificing reach. The MDW-HGS series designation indicates this is a high-performance geometry bit intended for controlled, repeatable drilling cycles rather than hand-held or light-duty use. Machinists, tool and die technicians, and production drilling operators are the typical end users.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction for superior hardness and wear resistance in ferrous materials\u003c\/li\u003e\n\u003cli\u003e135-degree split-point geometry reduces thrust and eliminates the need for a center punch on most setups\u003c\/li\u003e\n\u003cli\u003eCoolant-through design channels fluid directly to the cutting edge for extended tool life in deep-hole applications\u003c\/li\u003e\n\u003cli\u003eTapered web with two margins promotes straightness and hole roundness\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank fits standard ER collets and drill chucks without adapters\u003c\/li\u003e\n\u003cli\u003eFlute-to-diameter ratio of 3xD supports maximum drilling depth of 0.7458 inches\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style screw machine length carbide drill for use in CNC machining centers, drill presses, and turret lathes configured for straight-shank tooling in the 0.1500 to 0.2000 inch diameter range.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation and use should be performed by qualified machinists or tooling technicians familiar with CNC setup and cutting tool protocols. Ensure the spindle is fully stopped and the machine is in a safe state before loading or removing the bit from the tool holder. Verify collet or chuck bore matches the straight-cylindrical shank diameter and that runout is within acceptable limits before beginning a drilling cycle. Follow machine manufacturer guidelines and applicable shop safety standards when programming feed and speed parameters for the workpiece material.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.159 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Size (Wire)\u003c\/strong\u003e: 21\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Angle\u003c\/strong\u003e: 135 degrees\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\u003eNumber of Flutes\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Margins\u003c\/strong\u003e: 2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 0.9843 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 3.1496 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\u003eMaximum Drilling Depth\u003c\/strong\u003e: 0.7458 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Point Length\u003c\/strong\u003e: 0.0329 inches\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\u003eFlute by Diameter Ratio\u003c\/strong\u003e: 3xD\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 Length Type\u003c\/strong\u003e: Screw Machine\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\u003eDiameter Size Range\u003c\/strong\u003e: 0.1500 to 0.2000 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.025 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: U101031\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SUMITOMO","offers":[{"title":"Default Title","offer_id":51748858495282,"sku":"U101031","price":145.14,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/37922339db91428017ca7a9e648a312d.jpg?v=1788899680","url":"https:\/\/voomisupply.com\/products\/sumitomo-u101031-solid-carbide-drill-bit-0-159-in","provider":"Voomi Supply","version":"1.0","type":"link"}