Hertel 331-208090 Countersink 3/4 in 110 Degree Solid Carbide

Product Description

The HERTEL 331-208090 is a single-flute solid carbide countersink designed for producing clean, accurate countersunk holes in a wide range of materials. With a 3/4 inch head diameter and a 110-degree included angle, this tool is built for applications where a precise, consistent seat is required for flat-head fasteners. The straight-cylindrical shank measures 3/4 inch in diameter, providing secure chuck retention in standard drill presses, milling machines, and CNC machining centers. Solid carbide construction delivers hardness and wear resistance that outlast high-speed steel alternatives in production environments. Machinists and tooling specialists are the primary users of this countersink.

This countersink is suited for use in metalworking and industrial fabrication settings where a 110-degree seat angle is specified. It handles both ferrous and non-ferrous materials and is appropriate for use on manual machines or CNC equipment where repeatable countersink geometry is critical. The single-flute design reduces chatter and produces a smooth finish in the countersink seat. It is commonly used in job shops, production machining operations, and maintenance facilities requiring precision hole preparation before fastener installation.

Key Features

• 3/4 inch head diameter for full-coverage countersinking on standard fastener sizes
• 110-degree included angle matches fastener seat specifications requiring that geometry
• Single-flute design minimizes chatter and promotes a clean, smooth finish
• Solid carbide construction provides superior wear resistance over high-speed steel
• 3/4 inch straight-cylindrical shank fits standard toolholders and collet chucks

Compatibility

Designed as an OEM-style replacement or direct-use countersink for standard 3/4 inch straight-shank toolholders on drill presses, milling machines, and CNC machining centers requiring a 110-degree included angle countersink.

Installation Notes

Installation and use should be performed by a qualified machinist or tooling technician. Ensure the machine spindle is fully stopped and the tool is secured before changing or seating the countersink in the toolholder. Use appropriate cutting speeds and feeds for solid carbide tooling based on the workpiece material. Do not exceed the tool's rated capacity, and inspect the cutting edge for chipping before each use.