Hertel 89324412 Taper Shank Drill Bit 3.5 in 5MT Hss

Product Description

The HERTEL 89324412 is a large-diameter taper shank drill bit designed for heavy-duty drilling operations in metal and similar materials. Built from high-speed steel with an oxide finish, this bit measures 3-1/2 inches in diameter and carries a 5 Morse Taper (5MT) shank for secure, positive engagement in compatible machine spindles. The 118-degree drill point is a general-purpose geometry suited for a wide range of ferrous and non-ferrous materials. With a 16-1/4-inch flute length and 24-inch overall length, this bit is built for deep-hole drilling applications where reach and chip evacuation both matter.

This drill bit is used in industrial machining environments including job shops, manufacturing facilities, and maintenance operations requiring large-bore hole production. The 5MT shank interfaces directly with heavy milling machines, drill presses, and lathes equipped with a matching taper socket or adapter sleeve. The general-purpose designation makes it appropriate for production drilling in mild steel, cast iron, aluminum, and similar materials. Machinists, toolroom technicians, and industrial maintenance mechanics are the typical end users for a bit of this size and shank type.

Key Features

• 3-1/2 inch diameter for large-bore hole production in a single pass
• 5 Morse Taper shank provides rigid, self-holding fit in compatible spindles
• High-speed steel construction handles heat and wear in general-purpose machining
• Oxide finish offers basic corrosion resistance and mild lubricity
• 118-degree drill point angle suits a broad range of common work materials
• 16-1/4-inch flute length supports chip clearance in deep-hole applications

Compatibility

Designed for use in drill presses, milling machines, and lathes fitted with a No. 5 Morse Taper spindle or adapter sleeve. Suitable for general-purpose drilling in ferrous and non-ferrous metals.

Installation Notes

Installation and use should be performed by qualified machinists or toolroom personnel. Ensure the machine spindle is fully powered down and locked out before seating or removing the taper shank. Clean both the shank taper and the spindle socket thoroughly before engagement to prevent runout caused by chips or debris. At this diameter, drilling typically requires a rigid setup, appropriate cutting fluid, and reduced feed rates to manage thrust load and heat buildup.