Sumitomo 5VHY008 Screw Machine Drill Bit 0.126in Carbide

Product Description

The SUMITOMO 5VHY008 is a screw machine length drill bit built for high-performance drilling in ferrous and hard metals. It is manufactured from solid carbide and features a coated finish for extended tool life in demanding applications. The bit has a 135-degree drill point angle, a straight-cylindrical shank, and a tapered web configuration. At 3.20 mm (0.126 inches) in diameter, it runs 72.00 mm (2.835 inches) overall and delivers a maximum drilling depth of 15.90 mm (0.626 inches). Coolant-through design supports chip evacuation and heat control at depth. Installed by machinists and tool-room technicians in CNC and manual drilling operations.

The 5VHY008 is suited for precision drilling in cast iron, stainless steel, and steel workpieces. Its screw machine length profile makes it a practical choice for short-reach applications where rigidity and accuracy matter. The 3xD flute-to-diameter ratio and two-margin geometry support consistent hole quality in production and maintenance environments. This bit fits standard tool holders accepting a 4.00 mm (0.157 inches) straight shank. It is sold individually and is appropriate for both CNC machining centers and conventional drill presses requiring tight-tolerance holes in ferrous materials.

Key Features

• Solid carbide construction with coated finish for wear resistance in hard and abrasive materials
• 135-degree drill point angle reduces thrust and improves centering on tough metals
• Coolant-through capability supports chip evacuation and temperature control at drilling depth
• Tapered web and two-margin design for consistent hole geometry and reduced walking
• Screw machine length (2.835 inches overall) provides added rigidity over jobber-length bits
• Straight-cylindrical shank with h8 tolerance for secure, repeatable tool holder seating

Compatibility

Designed for use in ferrous workpiece materials including cast iron, stainless steel, and steel. Compatible with tool holders and chucks accepting a 4.00 mm straight-cylindrical shank. Part of the SUMITOMO MDW-HGS series for screw machine length carbide drills in the 0.1000 to 0.1500 inch diameter range.

Installation Notes

Installation is performed by qualified machinists or tool-room technicians. Secure the shank fully in the tool holder or chuck before operation and verify runout is within acceptable limits. Engage coolant-through supply when available to maximize tool life and chip control. Inspect the cutting edges and coating for damage before each use; replace the bit if chipping or wear is visible.