Sumitomo 5UHY008 Screw Machine Drill Bit 2.70mm Carbide

Product Description

The SUMITOMO 5UHY008 is a screw machine length drill bit designed for high-precision drilling in demanding industrial applications. Built from solid carbide with a multi-layer coating, this bit delivers consistent hole quality in hard and abrasive materials. It measures 0.1063 inches (2.70 mm) in diameter with an overall length of 1.7717 inches (45.00 mm). The 135-degree split-point tip reduces walking and thrust requirements at entry. Right-hand cut with a regular spiral flute geometry, it suits production environments where tight tolerances and tool longevity are required.

This drill bit is intended for use in ferrous materials, specifically cast iron and steel. The screw machine length format offers increased rigidity compared to jobber-length bits, making it well suited to CNC machining centers, drill presses, and screw machine setups. Its straight cylindrical shank fits standard ER collets and drill chucks. The 2xD flute-to-diameter ratio and tapered web construction support chip evacuation in short, high-feed drilling cycles typical of production floor environments.

Key Features

• Solid carbide construction for extended tool life in cast iron and steel
• 135-degree drill point angle reduces entry thrust and walking
• Multi-layer coating for heat and wear resistance
• Screw machine length for added rigidity over jobber-length alternatives
• Straight cylindrical shank compatible with standard collets and drill chucks
• Tapered web with 2xD flute ratio supports chip clearance in short-cycle drilling

Compatibility

Designed for drilling cast iron and steel workpieces. Part of the SUMITOMO MDW-GS series, sized within the 0.1000 to 0.1500 inch (0.00 to 3.50 mm) diameter range. Fits standard straight-bore collet chucks and drill chucks accepting a 3.00 mm shank diameter.

Installation Notes

Installation and use should be performed by qualified machinists familiar with carbide tooling. Secure the shank fully in the collet or chuck before operation and verify runout with a dial indicator when tolerances are critical. Carbide is brittle — avoid side-loading, interrupted cuts beyond the tool rating, or dropping the bit on hard surfaces. Always follow machine manufacturer guidelines and applicable shop safety procedures when setting speeds and feeds for solid carbide tooling.