Cleveland C70255 Screw Machine Drill Bit 1/8 in Hss

Product Description

The CLEVELAND C70255 is a screw machine length drill bit designed for high-speed steel cutting in tight-clearance drilling applications. Built to a 1/8-inch diameter with a 135-degree split point, it delivers fast penetration and self-centering entry without a center punch. The web-thinned, parallel-web construction reduces cutting resistance and heat buildup at the tip. At 1-7/8 inches overall length, this short-flute geometry provides rigidity in drill press, CNC turret, and hand-held power tool setups. The bright, uncoated finish suits general-purpose use across a range of workpiece materials. Licensed tradespeople and machinists working in production and maintenance environments are the primary users of this bit.

This bit is suited for drilling alloy steels, aluminum, and similar machinable materials in residential, commercial, and light industrial settings. The screw machine length format makes it a standard choice for turret lathes, machining centers, and drill presses where stub-length rigidity is preferred over jobber-length reach. The right-hand spiral flute design evacuates chips efficiently during through-hole and blind-hole operations.

Key Features

• 1/8-inch diameter with a decimal tolerance of +0.0000 to -0.0005 inches for precise hole sizing
• 135-degree split point for self-centering entry and reduced feed pressure
• Web-thinned, parallel-web construction lowers cutting resistance and extends tool life
• High-speed steel construction rated for heavy-duty drilling grades
• Bright, uncoated finish compatible with a wide range of workpiece materials including alloy and aluminum
• Straight-cylindrical shank fits standard drill chucks without adaptation

Compatibility

Designed as an OEM-style replacement or direct-use screw machine length drill bit for standard 1/8-inch straight-shank drill chucks in drill presses, turret lathes, and CNC machining centers.

Installation Notes

Installation and use should be performed by qualified machinists or trades personnel familiar with rotating cutting tools. Secure the shank fully in the drill chuck and verify runout before operation. Power down and de-energize all equipment before changing bits. Follow applicable OSHA machine guarding requirements and shop safety protocols when operating drilling equipment.