Hertel 18629 Countersink 1/2 in 82 Degree 4 Flute Hss

Product Description

The HERTEL 18629 is a straight-shank countersink designed for deburring and chamfering operations in metal, wood, and composite materials. Built from high speed steel, it delivers consistent cutting performance across a wide range of workpiece materials. The 1/2 inch head diameter and 82 degree included angle make it suited for standard flat-head fastener seating applications. The 3/8 inch straight-cylindrical shank fits conventional drill chucks and machine tool holders without adapters. Four flutes provide smooth chip evacuation and a clean countersunk finish. This tool is used by machinists, maintenance technicians, and general fabricators working on light to medium production tasks.

The HERTEL 18629 countersink is appropriate for use in drill presses, lathes, and hand-held power drills where precise chamfering or fastener seat preparation is required. The 82 degree included angle aligns with aerospace and general-purpose flat-head screw standards, making it a common choice for panel assembly, sheet metal work, and structural fabrication. The 3/8 inch shank accommodates standard keyless and keyed chucks found on most benchtop and floor-standing drill presses.

Key Features

• 1/2 inch head diameter for standard countersinking and chamfering tasks
• 82 degree included angle matches flat-head fastener specifications common in general and aerospace fabrication
• 4 flutes for smooth chip flow and a consistent finish on the countersunk seat
• High speed steel construction provides durability across ferrous and non-ferrous workpiece materials
• 3/8 inch straight-cylindrical shank fits standard drill chucks and machine tool holders

Compatibility

Designed as a general-purpose countersink compatible with drill presses, lathes, and power drills fitted with a 3/8 inch or larger keyless or keyed chuck accepting straight-cylindrical shanks.

Installation Notes

Installation is performed by machinists and maintenance technicians using standard drill chuck equipment. Secure the shank fully in the chuck before operation and verify the workpiece is clamped or fixtured to prevent movement. Use appropriate cutting fluid for ferrous materials to extend tool life and improve finish quality. Always wear eye protection when operating rotary cutting tools.