Value Collection 01378553 Cobalt Drill Bit Size 55

Product Description

The VALUE COLLECTION 01378553 is a cobalt screw machine length drill bit in wire gauge size 55, designed for drilling small-diameter holes in ferrous and hard metals. With a 135-degree split point, this bit self-centers on contact, reducing the need for a center punch and minimizing walking on hard surfaces. The overall length is 1.625 inches with a 0.625-inch flute length, making it suited for close-quarter and short-reach drilling applications. The straw finish indicates the cobalt material has been heat-treated for added hardness. This is a heavy-duty bit handled by machinists, tool-and-die workers, and general metalworking trades.

This bit is designed for use in screw machine work, CNC drilling, and bench drilling operations where small wire gauge holes are required. At 0.0520 inches in diameter, it is commonly used when drilling pilot holes, clearance holes, or tap-drill holes for fine-thread fasteners in steel, stainless, cast iron, and other hard materials. The short flute and overall length keep deflection low in tight setups and multi-spindle machines.

Key Features

• Wire gauge size 55 with 0.0520-inch decimal diameter for precise small-hole drilling
• 135-degree split point for self-centering entry and reduced thrust force
• Cobalt construction with straw finish for improved heat and wear resistance in hard metals
• Regular spiral flute promotes efficient chip evacuation in through-hole drilling
• Straight shank fits standard drill chucks without adapters
• Heavy-duty grade suitable for production and repeat-cycle use

Compatibility

Designed as an OEM-style replacement or stock bit for any standard drill chuck accepting a straight shank at 0.0520-inch diameter; fits screw machines, CNC drilling centers, and benchtop drill presses used in general metalworking applications.

Installation Notes

Installation and use should be performed by machinists or qualified metalworking tradespeople familiar with small-diameter tooling. Ensure the drill chuck is fully tightened and the workpiece is securely clamped before operation. At this diameter, bit breakage is a risk if feed pressure is excessive or the bit is side-loaded — use a drill press or rigid setup rather than a handheld drill where possible. Do not force the bit through hardened materials beyond its rated grade.