Hertel H-81115045000 Combo Drill Countersink 3/8 in Hss

Product Description

The HERTEL H-81115045000 is a combination drill and countersink designed to drill a pilot hole and countersink in a single pass. Built from high-speed steel with a bright, uncoated finish, this tool is suited for metalworking, fabrication, and general machining applications. It carries a trade size of 4-1/2 with a 3/8-inch body diameter, a 9/64-inch drill point diameter, and a 118-degree drill point angle. The 60-degree included angle is the standard for most countersunk fastener applications. Machinists, tool-and-die workers, and metal fabricators will find this tool appropriate for production and maintenance work on drill presses, lathes, and milling machines.

This combo drill countersink is intended for use in metalworking environments where countersunk fastener holes are required. It is particularly useful when prepping work for flat-head machine screws or preparing center holes in metal stock. The double-end configuration provides two usable cutting ends, extending tool life between resharpening cycles. The plain cutting edge style and non-tapered, non-aircraft geometry make this a straightforward general-purpose countersinking tool for job shop and maintenance machining operations.

Key Features

• Combination drill and countersink performs two operations in a single tool
• High-speed steel construction provides durability in ferrous and non-ferrous materials
• Bright, uncoated finish for standard metalworking applications
• Double-end design offers two cutting ends to extend service life
• 118-degree drill point angle with 60-degree included angle suits standard countersunk fasteners
• Plain cutting edge style for smooth, consistent countersink geometry

Compatibility

Designed as a general-purpose combination drill countersink for use in standard metalworking operations requiring a trade size 4-1/2 tool with a 3/8-inch body diameter and 60-degree included angle.

Installation Notes

This tool is installed and operated by machinists on drill presses, lathes, or milling machines. Ensure the workpiece is securely clamped and the spindle speed is appropriate for the material being worked before engaging the tool. Inspect both cutting ends for wear or chipping before use. Follow standard shop safety practices including eye protection and chip management procedures.