Import 27558 Wire Size 58 Jobber Drill Bit Hss

Product Description

The IMPORT 27558 is a wire gauge size 58 high-speed steel jobber drill bit designed for general-purpose drilling in steel and cast iron. It features a 118-degree standard point angle and an oxide coating that reduces friction and heat buildup during operation. The straight cylindrical shank seats securely in standard drill chucks. At 1.625 inches overall length with an 11/16-inch flute, this is a compact bit suited for precision hole work in tight clearances. The web-thinned, tapered-web design reduces the thrust required to start the cut. Machinists, maintenance technicians, and trade professionals install and use this bit with standard benchtop or handheld drilling equipment.

This bit is intended for right-hand cutting in metalworking applications involving steel and cast iron workpieces. Its compact overall length and small 0.0420-inch diameter make it well suited for pilot holes, instrument panel work, electrical enclosure knock-outs, and other precision drilling tasks where a standard jobber-length bit would be too long. It is sold individually and is commonly stocked in multiples for production or service use where bit breakage at small diameters is expected.

Key Features

• Wire gauge size 58 diameter: 0.0420 inches for precision small-hole drilling
• 118-degree standard point angle with web-thinned, tapered-web geometry for reduced entry thrust
• High-speed steel construction handles the heat and hardness demands of steel and cast iron
• Oxide coating reduces friction and provides light corrosion resistance during storage and use
• Regular spiral flute promotes chip evacuation in metalworking applications
• Straight cylindrical shank fits standard drill chucks without adapters

Compatibility

Designed as a general-purpose replacement or stocking drill bit for use in standard drill chucks accepting straight cylindrical shanks sized at 0.0420 inches. Rated for drilling steel and cast iron workpieces.

Installation Notes

This bit is installed by a machinist or maintenance technician into a standard keyed or keyless drill chuck. Secure the shank fully in the chuck before operation and confirm concentricity to avoid bit deflection at this small diameter. At wire gauge sizes this small, reduced feed pressure and appropriate cutting fluid will extend bit life and reduce breakage. Inspect the cutting edges before each use, as high-speed steel bits at small diameters are susceptible to tip damage from improper storage or handling.