Osg 220-0550 Jobber Drill Bit 54 0.0550 in Solid Carbide

Product Description

The OSG 220-0550 is a jobber-length drill bit in wire gauge size 54, equivalent to 0.0550 inches (1.40 mm) in diameter. Built from solid carbide, it features a 118-degree split-point web-thinned tip that promotes self-centering and reduces walking on entry. The overall length is 1.5 inches with a 0.75-inch flute length, and the shank is straight-cylindrical for direct chuck mounting. The bright, uncoated finish makes this a general-purpose tool suited for shop and field use by machinists, tool-and-die tradespeople, and maintenance technicians working in metal fabrication or mechanical assembly environments.

This drill bit is designed for drilling blind holes, cross holes, and through-holes in a wide range of workpiece materials including steel, alloy steel, stainless steel, cast iron, aluminum, aluminum alloy, and aluminum silicate. The right-hand cut with a regular spiral flute handles chip evacuation in both ferrous and non-ferrous applications. Its small diameter and solid carbide construction make it well suited for precision hole work in tight-tolerance assemblies where high-speed steel tooling may not hold edge life.

Key Features

• Solid carbide construction for extended edge life in ferrous and non-ferrous materials
• 118-degree web-thinned tip promotes self-centering and reduces thrust force at entry
• Regular spiral flute with right-hand cut for efficient chip evacuation
• Straight-cylindrical shank fits standard drill chucks without adapters
• Bright uncoated finish allows visual wear inspection and suits a broad range of base materials
• Tapered web configuration supports rigidity at this small diameter

Compatibility

Designed as a general-purpose jobber-length drill bit for use in standard drill chucks, CNC machining centers, and benchtop drill presses where wire gauge size 54 (0.0550 inches) tooling is specified. Compatible with workpiece materials coded P, M, K, and N per ISO material classification, covering steels, stainless steels, cast irons, and aluminum alloys.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or maintenance technicians familiar with small-diameter carbide tooling. Carbide is brittle and more sensitive to lateral loading than high-speed steel — avoid side pressure and interrupted cuts that can cause tip fracture. Secure the shank fully in the chuck and verify concentricity before engaging the workpiece. Coolant-through is not supported on this series; apply cutting fluid externally when drilling steel or stainless to manage heat buildup.