Sumitomo 5UHY031 Screw Machine Drill Bit 0.1969in Carbide

Product Description

The SUMITOMO 5UHY031 is a screw machine length drill bit engineered for precision drilling in demanding industrial applications. Built from solid carbide with a coated finish, this bit measures 0.1969 inches (5.00 mm) in diameter and delivers consistent, accurate hole quality in ferrous materials. The 135-degree split point reduces walking and cutting force at entry, making it well suited for CNC and manual drilling operations. With an overall length of 2.4016 inches and a two-flute design, it provides efficient chip evacuation in short-depth drilling cycles. Licensed machinists and tool-and-die professionals are the primary users of this style of bit.

The 5UHY031 belongs to the SUMITOMO MDW-GS series and is designed for use on cast iron and steel workpieces. Its screw machine length profile — shorter than a jobber bit — makes it ideal for rigid setups on CNC machining centers, drill presses, and turret lathes where overhang must be minimized. The straight-cylindrical shank fits standard drill chucks and collet toolholders without modification. Maximum drilling depth is 0.6890 inches, appropriate for through-hole and shallow blind-hole work in production environments.

Key Features

• Solid carbide construction for wear resistance in cast iron and steel
• 135-degree drill point angle reduces entry walking and thrust force
• Coated finish extends tool life in abrasive ferrous materials
• Two-flute tapered web design promotes efficient chip removal
• Screw machine length body provides enhanced rigidity in short-reach setups
• Straight-cylindrical shank compatible with standard chucks and collet holders

Compatibility

Designed for drilling cast iron and steel workpieces. Part of the SUMITOMO MDW-GS series, sized for drill bit diameter range 0.1500 to 0.2000 inches (5.00 to 6.50 mm) tooling systems with straight-cylindrical shank toolholders.

Installation Notes

Installation and use should be performed by qualified machinists familiar with rotating cutting tool safety. Ensure the spindle is fully stopped and the machine is de-energized before changing tooling. Secure the shank firmly in a properly sized collet or drill chuck to the depth recommended by the toolholder manufacturer. Inspect the cutting edges for chipping or wear before each use, as carbide tooling can fail suddenly if run with damaged geometry.