Sumitomo U101170 Mechanics Drill Bit 7/16 in Carbide

Product Description

The SUMITOMO U101170 is a solid carbide mechanics drill bit engineered for high-performance drilling in demanding industrial and machining applications. It measures 7/16 inches (0.4375 inches) in diameter with an overall length of 4.4882 inches and a flute length of 2.6772 inches. The bit features a TiAlCr/TiSi coating that improves heat resistance and extends tool life in abrasive and hard materials. A 135-degree drill point angle reduces the thrust force required to initiate a cut, making it well suited for use in CNC machining centers and manual drill presses alike. This bit is part of the MDW-GS4 series and is sold as a single unit.

This mechanics-length drill bit is designed for use on cast iron, non-ferrous metals, stainless steel, and carbon and alloy steels. The shorter mechanics-length body provides increased rigidity compared to jobber-length bits, making it a practical choice for tight-clearance setups or fixtures where deflection must be minimized. Machinists, toolroom technicians, and CNC operators working with hard or abrasive workpiece materials will find this bit appropriate for production drilling cycles where tool life and hole quality are priorities.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• TiAlCr/TiSi coating improves heat resistance and extends tool life
• 135-degree drill point angle reduces thrust and self-centers on contact
• Tapered web configuration adds core strength along the flute length
• Mechanics length (4.4882 inches OAL) provides enhanced rigidity versus jobber-length bits
• Compatible with cast iron, stainless steel, non-ferrous metals, and steel workpieces

Compatibility

Designed for use with cast iron, non-ferrous metal, stainless steel, and steel workpiece materials, consistent with material codes H, K, M, N, P, and S as specified by the manufacturer.

Installation Notes

This drill bit is intended for use by machinists and toolroom professionals operating CNC machining centers or manual drill presses. Ensure the spindle and workholding fixture are fully stopped before installing or removing the bit. Secure the shank in an appropriate collet or drill chuck rated for the 7/16-inch shank diameter. Coolant-through is not supported on this bit, so external coolant or cutting fluid should be applied as required by the workpiece material and feed rate.