Sumitomo 5VHY018 Solid Carbide Screw Machine Drill Bit

Product Description

The SUMITOMO 5VHY018 is a solid carbide screw machine length drill bit engineered for high-performance drilling in demanding metalworking applications. It carries a 4.20 mm (0.1654 inch) diameter with a 135-degree split-point tip geometry and a tapered web configuration for improved chip evacuation and reduced thrust. The straight-cylindrical shank measures 5.00 mm in diameter and 2.0866 inches in length, fitting standard drill chucks and collet holders. Coolant-through capability supports internal flood or mist cooling during high-speed operations. This bit is designed for use by machinists and CNC operators working in production and job-shop environments.

The 5VHY018 is suited for drilling cast iron, stainless steel, and steel in screw machine, CNC lathe, and machining center setups. The screw machine length design provides a shorter, more rigid profile compared to jobber-length bits, reducing deflection during entry and improving positional accuracy in tight-tolerance work. The MDW-HGS series designation indicates a high-geometry, coated carbide design optimized for interrupted cuts and work-hardening alloys common in production machining. Maximum drilling depth is 0.7717 inches (19.60 mm), suited for shallow-to-moderate depth holes in the primary workpiece materials listed.

Key Features

• Solid carbide construction with applied coating for extended tool life in ferrous materials
• 135-degree drill point angle reduces thrust and improves self-centering on flat and curved surfaces
• Coolant-through design supports internal cooling for high-speed and deep-hole operations
• Tapered web with 2-flute, 2-margin geometry promotes chip flow and hole-wall finish
• Screw machine length provides a rigid, compact profile for accurate drilling in production setups
• h8 diameter tolerance ensures consistent fit in precision toolholders and bushings

Compatibility

Designed for use with cast iron, stainless steel, and carbon steel workpieces. Part of the SUMITOMO MDW-HGS series. Compatible with standard 5.00 mm straight-cylindrical shank toolholders, collet chucks, and drill bushings in CNC machining centers and screw machines.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the spindle at a complete stop and machine power locked out. Ensure the shank is fully seated and the collet or chuck is torqued to the toolholder specification before cycling the machine. Verify coolant-through passages are clear and supply pressure is adequate before engaging the cut. Do not exceed the maximum drilling depth of 0.7717 inches without a peck-drilling cycle to clear chips.