Sumitomo 5VHY499 Solid Carbide Drill Bit 0.689 in

Product Description

The SUMITOMO 5VHY499 is a screw machine length drill bit designed for high-performance drilling in demanding metalworking applications. Built from solid carbide with a coated finish, this bit measures 0.689 inches (17.50 mm) in diameter with an overall length of 6.2205 inches (158.00 mm). The 135-degree split-point geometry reduces walking and cutting force at entry. Coolant-through construction delivers cutting fluid directly to the cutting zone, extending tool life and improving chip evacuation in deep-hole applications. The straight-cylindrical shank seats securely in standard drill chucks and toolholders. Machinists and toolroom technicians working in production environments are the primary users of this tool.

The 5VHY499 is part of the MDW-HGS series, engineered for drilling cast iron, stainless steel, and steel workpieces. The screw machine length profile keeps the bit compact and rigid, reducing deflection in CNC machining centers, drill presses, and turret lathes. A maximum drilling depth of 2.5551 inches (64.90 mm) and a 3xD flute-to-diameter ratio make it well-suited for through-holes and blind holes in medium to heavy-duty production runs. The tapered web design provides additional strength at the core without sacrificing chip flow.

Key Features

• Solid carbide construction for rigidity and heat resistance in ferrous metal drilling
• Coated finish extends cutting edge life and reduces built-up edge
• Coolant-through design delivers fluid directly to the cutting zone
• 135-degree drill point angle reduces entry walking and axial cutting force
• Tapered web with 2 margins for stable, accurate hole geometry
• Straight-cylindrical shank with h8 diameter tolerance for precise toolholder fit

Compatibility

Part of the SUMITOMO MDW-HGS series, designed for use with cast iron, stainless steel, and steel workpieces. Compatible with standard straight-shank toolholders and hydraulic chucks accepting a 17.00 mm shank diameter.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or toolroom personnel. Verify that the machine spindle and toolholder are clean and free of debris before seating the shank. Confirm that coolant-through capability is active at the machine before beginning drilling operations to prevent premature tool wear. Follow applicable shop safety procedures and machine manufacturer guidelines for spindle speeds and feed rates.