Hertel 334-202100 Countersink 3/16 in 120 Degree 4 Flute Carbide

Product Description

The HERTEL 334-202100 is a solid carbide countersink designed for precision chamfering and deburring of drilled holes in metalworking and fabrication applications. It features a 3/16-inch head diameter with a 120-degree included angle and four flutes, delivering clean, consistent countersunk seats in a range of workpiece materials. The straight cylindrical shank measures 3/16 inches in diameter, making it compatible with standard collet chucks and drill chucks. Machinists, toolroom technicians, and metal fabricators use this countersink when tight tolerances and a quality finish are required on fastener seats, chamfers, and edge breaks.

This countersink is suited for light-duty precision work on CNC machining centers, drill presses, and manual mills where a compact 3/16-inch tool diameter is appropriate. The 120-degree included angle is a common standard for general-purpose countersinking of flat-head fastener holes across steel, aluminum, and similar materials. The four-flute geometry improves surface finish and reduces chatter compared to single- or two-flute designs, making it a practical choice for production environments and toolroom setups where repeatability matters.

Key Features

• 3/16-inch head diameter for compact, precise countersinking in tight or small-diameter hole applications
• 120-degree included angle meets common flat-head fastener countersink standards
• Four-flute design reduces chatter and improves surface finish quality
• Solid carbide construction provides hardness and wear resistance for extended tool life
• Straight cylindrical shank fits standard collet chucks and drill chucks without special adapters

Compatibility

Designed as a general-purpose countersink for use in standard collet chucks and drill chucks that accept a 3/16-inch straight cylindrical shank on CNC machining centers, drill presses, and manual milling machines.

Installation Notes

Installation and use should be performed by qualified machinists or toolroom technicians familiar with cutting tool safety. Secure the shank fully in the collet or chuck before operation and verify runout is within acceptable limits for the application. Always reduce spindle speed and feed rate when first testing a new tool in a given material to prevent chipping the carbide cutting edges. Follow shop safety protocols and wear appropriate eye protection when operating rotary cutting tools.