Hertel 18064 Countersink 1/4 in 60 Degree 6 Flute Hss

Product Description

The HERTEL 18064 is a high speed steel countersink designed for deburring and chamfering operations in metal, plastic, and composite materials. With a 1/4 inch head diameter and a 60-degree included angle, this tool cuts clean, consistent countersunk seats for flathead fasteners. The six-flute geometry distributes cutting load evenly, reducing chatter and producing a smooth finish. The straight cylindrical shank measures 1/4 inch in diameter and 1 inch in length, making it compatible with standard drill chucks and collet holders. Licensed machinists, toolroom technicians, and fabricators will find this countersink suited to precision bench and machine work.

The HERTEL 18064 is used in machine shop, fabrication, and maintenance environments where accurate countersinking is required. It is suitable for deburring drilled holes, chamfering edges, and seating flathead or oval-head fasteners flush with or below a workpiece surface. The 60-degree included angle is common in aerospace and general metalworking applications. The straight shank fits standard drill press, CNC, and hand-held driver chucks without an adapter.

Key Features

• 1/4 inch head diameter for compact countersinking in tight locations
• 60-degree included angle suits flathead fastener seating in metal and composite workpieces
• Six-flute design reduces chatter and produces a smooth, consistent chamfer
• High speed steel construction provides durability across a range of workpiece materials
• Straight cylindrical shank fits standard drill chucks and collet holders without modification

Compatibility

Designed as an OEM-style replacement or direct addition for standard countersinking applications requiring a 1/4 inch straight cylindrical shank tool in drill press, CNC, or hand-held chuck setups.

Installation Notes

Installation and use should be performed by a qualified machinist or toolroom technician. Secure the straight shank firmly in a properly sized collet or drill chuck before operation and verify runout is within acceptable tolerance. Always power down and lock out the machine before changing or inspecting the tool. Use appropriate cutting fluid or lubricant for the workpiece material to extend tool life and maintain finish quality.