Hertel 300-003006 Combo Drill Countersink Size 4 Solid Carbide

Product Description

The HERTEL 300-003006 is a solid carbide combo drill countersink designed to drill and countersink in a single operation. With a trade size of 4 and a 5/16-inch body diameter, this tool cuts right-hand with a plain cutting edge style. The 90-degree included angle and 118-degree drill point angle deliver clean, accurate countersinks in a range of materials. The bright polished finish reduces friction and helps with chip evacuation. Machinists and fabricators install this tool in standard drill presses, CNC machining centers, and hand drill setups where combined drilling and countersinking is required.

This combo drill countersink is suited for metalworking and fabrication applications where a countersunk hole must be produced efficiently in a single pass. The 1/8-inch drill point diameter and 1/8-inch drill point length establish the pilot, while the body countersinks simultaneously. The 2-1/8-inch overall length fits standard toolholding systems. The double end type extends tool life by providing two usable ends. It is not an aircraft-style or long-length tool and is not configured for insertable cutter heads.

Key Features

• Solid carbide construction for hardness and wear resistance in demanding materials
• 90-degree included angle for standard flat-head fastener countersinks
• 118-degree drill point angle for accurate pilot hole entry
• Bright polished finish reduces friction and aids chip flow
• Double end design extends usable tool life
• Right-hand cut, plain cutting edge, non-tapered body

Compatibility

Designed as an OEM-style replacement or direct-use combo drill countersink for standard drill press, CNC, and hand-drill toolholding systems accepting a 5/16-inch body diameter shank.

Installation Notes

This tool is installed and operated by machinists or skilled fabricators. Secure the tool firmly in the appropriate chuck or collet before operation and verify that the workpiece is clamped to prevent movement. Use appropriate cutting speeds and feeds for solid carbide tooling in the target material to avoid chipping the cutting edge. Wear appropriate eye protection and follow shop safety procedures when operating rotary cutting tools.