Eagle Cutting Tool CS-3750-60-6-I Hss Countersink 60 Degree 6 Flute

Product Description

The EAGLE CUTTING TOOL CS-3750-60-6-I is a high-speed steel (HSS) countersink designed for creating clean, accurately angled seat recesses in metal, wood, and plastic. The tool features a 60-degree included angle and six flutes, which distribute cutting load evenly and reduce chatter during operation. It accepts a 1/4-inch shank, making it compatible with standard drill chucks and driver setups. At 0.05 pounds, it is a lightweight, single-purpose cutting tool suited for bench drill presses, hand drills, and CNC setups requiring consistent countersink geometry. Machinists, fabricators, and metalworking tradespeople are the primary installers.

This countersink is used wherever a 60-degree seat angle is required ahead of flathead fastener installation or deburring operations. Typical applications include light metalworking, sheet metal fabrication, woodworking, and general-purpose shop work. The 3/8-inch cutting diameter and 1/4-inch reduced shank make it practical for use in production environments and field repair scenarios alike where a compact, reliable countersink is needed.

Key Features

• 60-degree included angle for standard flathead fastener seating
• Six-flute design reduces chatter and produces a smoother finish
• High-speed steel (HSS) construction provides wear resistance across common work materials
• 3/8-inch cutting diameter with 1/4-inch shank for broad chuck compatibility
• Lightweight at 0.05 pounds for easy handling in bench and portable drill applications

Compatibility

Designed as a general-purpose replacement or supplemental countersink for drill presses, hand drills, and CNC spindles accepting a 1/4-inch shank toolholder.

Installation Notes

Installation is performed by machinists or fabricators with standard drill press or hand-drill equipment. Secure the 1/4-inch shank firmly in the chuck before operation and confirm the workpiece is clamped to prevent movement. Use appropriate cutting fluid on metal substrates to extend tool life and improve finish quality. Follow applicable shop safety standards for rotating cutting tools, including eye protection and secure workholding.

Technical Specifications

• Cutting Diameter: 3/8 inches
• Shank Diameter: 1/4 inches
• Included Angle: 60 degrees
• Number of Flutes: 6
• Material: High-Speed Steel (HSS)
• Weight: 0.05 pounds

Standard Information

• Brand: EAGLE CUTTING TOOL
• Manufacturer Part Number: CS-3750-60-6-I