Eagle Cutting Tool 1090-129-I Hss Drill Bit 1-29/64 in

Product Description

The EAGLE CUTTING TOOL 1090-129-I is a high speed steel (HSS) screw machine length drill bit ground to a 1-29/64 inch diameter with a 1/2 inch reduced shank. Screw machine length bits are shorter than jobber length, which improves rigidity and reduces deflection in production drilling and CNC applications. The HSS construction handles a wide range of materials including mild steel, aluminum, brass, and thermoplastics. This bit is imported and suited for machinists, tool and die technicians, and general metalworking trades.

This drill bit is used in screw machines, drill presses, and CNC machining centers where a 1/2 inch shank is required to fit standard chuck capacity. The 1-29/64 inch cutting diameter is a fractional-plus size commonly needed for hole preparation, clearance drilling, and stepped-hole operations in both production and maintenance machining environments. It is appropriate for shop and field use where short-length rigidity is preferred over jobber reach.

Key Features

• 1-29/64 inch cutting diameter for precise fractional-plus hole sizing
• 1/2 inch shank fits standard drill press and machining center chucks
• Screw machine (stub) length improves rigidity and reduces bit deflection
• High speed steel construction suitable for ferrous and non-ferrous materials
• Minimum order quantity of 1 — available as a single unit

Compatibility

Designed as a screw machine length HSS drill bit for use in any drill press, screw machine, or CNC spindle accepting a 1/2 inch shank, where a 1-29/64 inch cutting diameter is required.

Installation Notes

Secure the 1/2 inch shank fully into the chuck before operation and verify chuck key is removed before starting the machine. Use appropriate cutting fluid for the material being drilled to extend tool life and maintain cut quality. Follow shop safety protocols and applicable OSHA machine guarding requirements when operating drill presses or CNC equipment. Inspect the cutting edges for wear or chipping before each use and replace if edge condition is degraded.

Technical Specifications

• Cutting Diameter: 1-29/64 inches
• Shank Diameter: 1/2 inch
• Drill Type: Screw Machine Length (Stub)
• Material: High Speed Steel (HSS)
• Weight: 1.2 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: 1090-129-I