Eagle Cutting Tool 1090-131-I Hss Drill Bit 1-31/64 in

Product Description

The EAGLE CUTTING TOOL 1090-131-I is a high speed steel (HSS) screw machine length drill bit with a 1-31/64 inch cutting diameter and a 1/2 inch reduced shank. Screw machine length bits are shorter than jobber length, providing added rigidity and improved hole accuracy in production and machine tool applications. This bit is suited for drilling ferrous and non-ferrous metals, plastics, and other common shop materials. Machinists, tool and die workers, and production floor operators typically use screw machine drill bits in drill presses, CNC machining centers, and turret lathes.

This drill bit is used in machine shop, fabrication, and production drilling operations where a rigid, stub-length bit is required to maintain tight tolerances. The 1/2 inch shank allows it to seat in standard 1/2 inch drill chucks and collet systems common on drill presses and manual mills. The 1-31/64 inch diameter is appropriate for applications requiring a large-diameter through hole or a pilot bore for reaming or boring operations.

Key Features

• 1-31/64 inch cutting diameter for large-bore drilling in metal and plastic
• High speed steel construction provides heat resistance and edge retention
• Screw machine (stub) length design increases rigidity and reduces deflection
• 1/2 inch reduced shank fits standard drill chucks and collet holders
• Import designation indicates value-tier sourcing for production and general-purpose use

Compatibility

Designed as a general-purpose screw machine length drill bit compatible with any drill press, CNC machine, or manual mill equipped with a 1/2 inch chuck or collet system.

Installation Notes

Installation is performed by machinists or qualified shop personnel. Secure the shank fully in the chuck or collet and verify runout before drilling. Always use appropriate cutting fluid for the material being drilled to extend tool life and improve hole quality. Follow applicable machine guarding and PPE requirements per shop safety standards.

Technical Specifications

• Cutting Diameter: 1-31/64 inches
• Shank Diameter: 1/2 inch
• Drill Style: Screw Machine Length (Stub)
• Material: High Speed Steel (HSS)
• Weight: 1.2 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: 1090-131-I