Eagle Cutting Tool C1090-042-I Cobalt Drill Bit 21/32 in

Product Description

The EAGLE CUTTING TOOL C1090-042-I is a 21/32-inch cobalt screw machine (stub) length drill bit with a 1/2-inch straight shank. Cobalt construction delivers higher heat resistance than standard high-speed steel, making it suitable for drilling harder materials including stainless steel, cast iron, and high-alloy metals. The reduced flute length of a screw machine geometry provides added rigidity and reduced deflection in production and maintenance drilling applications. Licensed tradespeople and maintenance machinists typically reach for this style when working in tight clearances or when bit flex is a concern.

This drill bit is suited for metal fabrication shops, mechanical contractors, industrial maintenance crews, and field technicians who drill through structural steel, pipe, equipment housings, or hardware. The 1/2-inch shank fits standard 1/2-inch keyed and keyless drill chucks found on benchtop drill presses and heavy-duty hand drills. It is an import-grade bit intended for general-duty production and service work where cobalt heat resistance is required but tooling cost must be managed.

Key Features

• 21/32-inch cutting diameter in cobalt construction for heat and wear resistance
• 1/2-inch straight shank compatible with standard drill chucks
• Screw machine (stub) length geometry reduces deflection and improves rigidity
• Cobalt alloy composition handles hardened and abrasive materials better than standard HSS
• Import-grade pricing suited for general maintenance and production environments

Compatibility

Designed as a general-purpose screw machine length drill bit compatible with any 1/2-inch drill chuck on benchtop drill presses, magnetic drills, or heavy-duty corded drill motors.

Installation Notes

Secure the 1/2-inch shank firmly in a properly tightened chuck before use. Use appropriate cutting fluid or coolant when drilling hard metals to extend bit life and prevent work hardening at the cut zone. Always wear eye protection and secure workpieces per applicable shop safety standards. Inspect the cutting edges before each use and replace the bit if chipping or excessive wear is present.

Technical Specifications

• Cutting Diameter: 21/32 inches
• Shank Diameter: 1/2 inches
• Bit Style: Screw Machine (Stub) Length
• Material: Cobalt
• Weight: 0.69 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: C1090-042-I