{"product_id":"sumitomo-u101033-solid-carbide-screw-machine-drill-bit","title":"Sumitomo U101033 Solid Carbide Screw Machine Drill Bit","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe SUMITOMO U101033 is a solid carbide screw machine length drill bit designed for high-precision drilling in ferrous materials. Built on the MDW-GS series platform, this bit features a 135-degree split-point geometry and a tapered web configuration that reduces thrust and improves chip evacuation on entry. The drill measures 0.166 inches (4.22 mm) in diameter with an overall length of 2.4016 inches and a flute length of 0.9055 inches. The straight-cylindrical shank and h8 diameter tolerance make it suitable for precision toolholders and drill chucks in CNC and manual machine applications. At 0.05 pounds, it is a compact, single-piece solid carbide tool intended for production environments.\u003c\/p\u003e\u003cp\u003eThis drill bit is engineered for use on cast iron and steel workpieces in screw machine, CNC lathe, and machining center applications. The screw machine length designation indicates a shorter, stiffer flute geometry optimized for rigidity and accuracy in high-cycle production drilling. The 2xD flute-by-diameter ratio and a maximum drilling depth of 0.6563 inches (16.67 mm) make it well suited to shallow-to-moderate depth hole applications where tight tolerances are required. Machinists, tool and die professionals, and CNC operators in metalworking shops are the primary users of this type of bit.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSolid carbide construction delivers hardness and wear resistance for steel and cast iron drilling\u003c\/li\u003e\n\u003cli\u003e135-degree split-point angle reduces walking and decreases thrust on entry\u003c\/li\u003e\n\u003cli\u003eTapered web configuration improves chip flow and cutting stability\u003c\/li\u003e\n\u003cli\u003eStraight-cylindrical shank with h8 tolerance fits standard precision chucks and toolholders\u003c\/li\u003e\n\u003cli\u003eScrew machine length body provides added rigidity compared to jobber-length bits\u003c\/li\u003e\n\u003cli\u003e2xD flute ratio supports efficient chip evacuation in short-depth holes\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement and production drill bit for use in screw machines, CNC machining centers, and manual drill presses capable of accepting a straight-cylindrical shank drill in the 0.1500 to 0.2000 inch (3.50 to 5.00 mm) diameter range.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by qualified machinists or CNC setup technicians. Power down and lock out the machine before inserting or removing tooling. Ensure the shank is fully seated and the chuck or collet is torqued to the toolholder manufacturer specification. Do not exceed the recommended maximum drilling depth of 0.6563 inches for this bit without verifying chip clearance and coolant strategy, noting that this series does not support coolant-through delivery.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrill Bit Diameter\u003c\/strong\u003e: 0.166 inches (4.22 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.4016 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlute Length\u003c\/strong\u003e: 0.9055 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShank Length\u003c\/strong\u003e: 1.4173 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Drilling Depth\u003c\/strong\u003e: 0.6563 inches (16.67 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: 0.0344 inches (0.87 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\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\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\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\u003ePrimary Workpiece Material\u003c\/strong\u003e: Cast Iron, Steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoolant Through\u003c\/strong\u003e: No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries\u003c\/strong\u003e: MDW-GS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiameter Size Range\u003c\/strong\u003e: 0.1500 to 0.2000 inches (3.50 to 5.00 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.05 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: U101033\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SUMITOMO","offers":[{"title":"Default Title","offer_id":51731118620978,"sku":"U101033","price":109.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/00fcf5cb68d5ca43a20c9f6a0237f0fb.jpg?v=1788727183","url":"https:\/\/voomisupply.com\/products\/sumitomo-u101033-solid-carbide-screw-machine-drill-bit","provider":"Voomi Supply","version":"1.0","type":"link"}