Hertel H-81155L02050 Combo Drill Countersink Hss

Product Description

The HERTEL H-81155L02050 is a combination drill and countersink designed for drilling and countersinking in a single pass. Built from high speed steel with a bright polished finish, this tool handles the pilot hole and the countersink seat simultaneously, reducing tool changes and setup time. It carries a Trade Size 2 designation with a 3/16 inch body diameter, a 5/64 inch drill point diameter, and a 118-degree drill point angle. The 90-degree included angle on the countersink geometry suits standard flat-head fastener seating. At 5 inches overall length, this is classified as a long-length tool, giving better reach in deeper fixtures or angled setups.

This combo drill countersink is intended for metalworking and fabrication applications where flat-head screws or rivets must sit flush or below surface. The plain cutting edge style and double end configuration make it a practical choice for production drilling, maintenance shops, and field service work. It is well suited for use in drill presses and hand-held drill applications where consistent countersink depth and angle are required. No taper and no insertable cutter head means the geometry is fixed and repeatable across the full tool life.

Key Features

• Combination drill and countersink completes pilot hole and countersink seat in one operation
• High speed steel construction provides durability across a range of ferrous and non-ferrous materials
• Bright polished finish reduces friction and aids chip evacuation
• 118-degree drill point angle with 90-degree included countersink angle for standard flat-head fastener seating
• Long-length tool at 5 inches overall length for extended reach applications
• Double end configuration extends usable tool life

Compatibility

Designed as an OEM-style replacement or direct substitute for Trade Size 2 combination drill countersinks used in standard metalworking and fabrication setups requiring a 3/16 inch body diameter and 90-degree countersink angle.

Installation Notes

Installation is performed by machinists and metal fabricators using a drill press, milling machine, or hand-held power drill with an appropriate chuck. Secure the workpiece firmly before operation and confirm spindle speed is appropriate for the material being drilled. Inspect the tool for wear or chipping before each use and replace when the cutting edges no longer produce clean countersink geometry.