Sumitomo 5VHY046 Screw Machine Drill Bit 7mm Carbide

Product Description

The SUMITOMO 5VHY046 is a solid carbide screw machine length drill bit designed for high-performance drilling in demanding metalworking applications. It measures 7.00 mm in diameter with an overall length of 88.00 mm (3.4646 inches) and features a 135-degree web-thinned point for self-centering entry and reduced thrust. The DEX multi-layer coating extends tool life in abrasive and heat-generating cuts. With a straight cylindrical shank and right-hand cutting direction, this bit is built for use in CNC machining centers, drill presses, and manual lathes where consistent hole quality and tool rigidity are required.

This bit is suited for drilling steel, stainless steel, cast iron, and high-temperature alloys in precision manufacturing and production machining environments. Its screw machine length (stub) profile provides increased rigidity compared to jobber-length bits, making it a practical choice for tight-tolerance hole applications. The MDW-HGS series is designed for production environments where tool repeatability and material versatility matter. Machinists and tooling professionals in job shops, aerospace, and industrial fabrication regularly use this series for interrupted cuts and hard-material drilling.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• 135-degree web-thinned point reduces thrust and improves self-centering
• DEX multi-layer coating for extended tool life in steel and stainless applications
• Coolant-through design delivers cutting fluid directly to the cutting edge
• Tapered web configuration with 2 regular spiral flutes for efficient chip evacuation
• Flute-by-diameter ratio of 3xD and maximum drilling depth of 25.90 mm (1.0197 inches)

Compatibility

Designed for use in applications involving steel, stainless steel, cast iron, and high-temperature alloys. Part of the SUMITOMO MDW-HGS series. Shank diameter matches the 7.00 mm drill diameter, conforming to h8 tolerance for standard toolholder compatibility.

Installation Notes

Installation and use should be performed by qualified machinists or tooling professionals familiar with CNC or manual machine setup. Ensure the machine spindle and toolholder are clean and properly torqued before seating the shank. When using coolant-through capability, verify that the machine tool provides adequate coolant pressure through the spindle. Do not exceed the recommended drilling depth of 25.90 mm per the series specification without retracting to clear chips.