Sumitomo U101082 Screw Machine Drill Bit 17/64 Solid Carbide

Product Description

The SUMITOMO U101082 is a screw machine length drill bit built for high-performance drilling in tough ferrous materials. The bit measures 17/64 inch (0.2656 inches) in diameter and is machined from solid carbide for rigidity and heat resistance at elevated cutting speeds. A 135-degree split point reduces thrust and improves centering without a pilot hole. Coolant-through capability delivers fluid directly to the cutting edge, extending tool life in deep-hole applications. The straight-cylindrical shank is compatible with standard drill chucks and collet holders. This bit is part of the MDW-HGS series and is intended for installation by machining and tooling professionals in production environments.

This drill bit is designed for drilling cast iron, stainless steel, and steel in screw machine and short-hole applications. The 3xD flute-to-diameter ratio and tapered web configuration make it well suited for CNC machining centers, drill presses, and automatic screw machines where consistent hole quality and cycle time matter. The overall length of 3.4646 inches and screw machine length classification keep the bit compact and stiff, reducing deflection in tight setups or gang-drilling fixtures.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous materials
• 135-degree drill point angle for self-centering entry and reduced thrust
• Coolant-through design delivers cutting fluid directly to the tip
• Straight-cylindrical shank fits standard chucks and collet systems
• Tapered web with 2 margins for stable chip evacuation and hole finish
• MDW-HGS series with h8 diameter tolerance for consistent fit

Compatibility

Designed as a screw machine length replacement drill bit for use in cast iron, stainless steel, and steel workpieces; compatible with standard straight-shank drill chucks and collet holders accepting a 0.2656-inch shank diameter within the 0.2500 to 0.3000 inch size range.

Installation Notes

Installation and tool changes should be performed by qualified machining personnel with the spindle fully stopped and the machine isolated from power. Ensure the chuck or collet is clean and properly torqued to the tool holder specification before running. Coolant-through setups require the machine coolant system to be connected and flow-tested prior to cutting. Follow the tooling manufacturer and machine builder guidelines for speeds and feeds when running solid carbide tooling in hardened or abrasive materials.