Eagle Cutting Tool 1080-053-D Hss Drill Bit 53/64 in

Product Description

The EAGLE CUTTING TOOL 1080-053-D is a 53/64-inch high-speed steel (HSS) slow-spiral drill bit with a 1/2-inch reduced shank, manufactured in the USA. Slow-spiral geometry reduces chip packing and heat buildup when boring through tough materials such as hard steels, cast iron, and dense alloys. The 1/2-inch shank allows this oversized bit to seat in standard 1/2-inch chuck equipment without requiring a larger spindle. Machinists, tool-and-die workers, pipefitters, and maintenance technicians rely on this style of bit for precision hole sizing in heavy-duty shop and field applications.

This drill bit is suited for metalworking operations where accurate hole diameter is critical, such as preparing bolt-clearance holes, reaming pilots, or sizing holes for bushings and fittings. The 53/64-inch diameter is a common fractional size used in structural, mechanical, and piping work. Its USA manufacture is consistent with tight dimensional tolerances expected in trade and industrial settings.

Key Features

• 53/64-inch cutting diameter for precise fractional hole sizing
• High-speed steel (HSS) construction withstands heat generated during hard-material drilling
• Slow-spiral flute design reduces chip packing and extends bit life in dense metals
• 1/2-inch reduced shank fits standard 1/2-inch drill chucks and machine spindles
• Manufactured in the USA to tight dimensional tolerances

Compatibility

Designed for use in any 1/2-inch keyed or keyless drill chuck, drill press, milling machine, or magnetic drill unit equipped to accept a 1/2-inch shank. Suitable for ferrous and non-ferrous metalworking applications requiring a 53/64-inch hole diameter.

Installation Notes

Secure the shank fully in the chuck before operation and verify chuck key is removed prior to starting the machine. Use cutting fluid or coolant appropriate for the workpiece material to extend bit life and maintain dimensional accuracy. Slow-spiral bits perform best at reduced RPM settings suited to the material hardness and bit diameter. Inspect the cutting edges for wear or chipping before each use and replace if the edge is compromised.

Technical Specifications

• Cutting Diameter: 53/64 inches
• Shank Diameter: 1/2 inch
• Material: High-Speed Steel (HSS)
• Country of Origin: USA
• Weight: 0.69 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: 1080-053-D