Eagle Cutting Tool CS-3750-82-6-I Hss Countersink 82 Deg 6 Flute

Product Description

The EAGLE CUTTING TOOL CS-3750-82-6-I is a high-speed steel (HSS) single-body countersink designed for deburring and countersinking operations in metal, wood, and composite materials. It features a 3/8-inch cutting diameter with a 1/4-inch shank and an 82-degree included angle, which is the standard angle for flat-head fasteners used throughout North American manufacturing and assembly. The 6-flute design produces a smoother finish cut compared to fewer-flute alternatives and reduces chatter during operation. At 0.05 pounds, this is a compact, lightweight tool suited for bench drill press and handheld drill driver use.

This countersink is well suited for light industrial, maintenance, fabrication, and general trade applications where accurate seat preparation for flat-head screws is required. The 82-degree angle matches the standard for imperial flat-head machine screws and sheet metal screws. The 1/4-inch straight shank fits standard drill chucks and quick-change hex adapters commonly found in HVAC, electrical, plumbing, and general mechanical trade work. It is appropriate for occasional use and production light-duty runs where an import-grade tool meets the application requirement.

Key Features

• 82-degree included angle matches standard imperial flat-head fastener geometry
• 6-flute construction reduces chatter and improves surface finish quality
• 3/8-inch cutting diameter suitable for common screw sizes in trade and fabrication work
• 1/4-inch straight shank fits standard drill chucks and quick-change hex adapters
• High-speed steel (HSS) construction handles steel, aluminum, wood, and plastics
• Lightweight at 0.05 pounds for easy single-hand tool handling

Compatibility

Designed as a general-purpose replacement or supplemental countersink for use with standard 1/4-inch shank drill chucks and quick-change adapters in drill presses and handheld drills. Compatible with applications requiring an 82-degree countersink angle for imperial flat-head fastener seating.

Installation Notes

Install the 1/4-inch shank securely into a drill chuck or quick-change adapter before operation. Set drill speed appropriate to the workpiece material — lower speeds for steel, higher speeds for aluminum and wood — to prevent overheating the HSS cutting edges. Always secure the workpiece before applying the countersink to prevent workpiece movement and tool deflection. Wear appropriate eye protection during all cutting operations.

Technical Specifications

• Cutting Diameter: 3/8 inches
• Shank Diameter: 1/4 inches
• Included Angle: 82 degrees
• Number of Flutes: 6
• Material: High-Speed Steel (HSS)
• Weight: 0.05 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: CS-3750-82-6-I