Hertel H-81154080000 Combo Drill Countersink Size 8

Product Description

The HERTEL H-81154080000 is a combination drill and countersink designed for creating a pilot hole and countersink recess in a single operation. Built from high-speed steel (HSS) with a bright uncoated finish, this tool handles ferrous and non-ferrous materials with consistent results. It carries a trade size of 8, a body diameter of 0.75 inches, and an overall length of 3.5 inches. The 82-degree included angle and 118-degree drill point angle are standard for flat-head fastener seating. Machinists and fabricators reach for this tool when accuracy and efficiency on countersink operations matter.

This combo drill countersink is suited for use in machine shops, fabrication environments, and production drilling applications. It is designed for use in drill presses, CNC machining centers, and manual lathes where a clean countersink seat is required before flat-head screw installation. The double-end design and plain cutting edge style make it appropriate for general-purpose countersinking work across a wide range of materials common in trade and industrial settings.

Key Features

• High-speed steel construction for durability across ferrous and non-ferrous materials
• Bright uncoated finish suited for general-purpose machining operations
• 82-degree included angle optimized for standard flat-head fastener countersinking
• 118-degree drill point angle for clean, accurate pilot hole entry
• Double-end design extends usable tool life
• 3.5-inch overall length provides clearance in most standard toolholders

Compatibility

Designed as a standard combination drill countersink for use in drill presses, manual lathes, and CNC machining centers requiring size 8 countersink geometry with a 0.75-inch body diameter.

Installation Notes

Installation and use should be performed by qualified machinists or tool operators familiar with proper speeds and feeds for HSS tooling. Secure the tool firmly in a compatible chuck or toolholder before operation and verify runout before beginning a cut. Always power down and de-energize the machine before changing or inspecting tooling. Follow applicable shop safety standards and machine manufacturer guidelines during use.