Hougen 17124 Annular Cutter 3/4 in Cobalt M42 Rotaloc

Product Description

The HOUGEN 17124 is a cobalt annular cutter designed for clean, efficient hole cutting in ferrous and hard metals. Built from M42 cobalt high-speed steel, this cutter delivers the heat resistance and edge retention needed when working through mild steel, stainless steel, and structural steel. It cuts a 3/4-inch diameter hole to a full 3/4-inch depth of cut, removing only the material at the perimeter of the hole rather than reducing the entire bore to chips. The 5/8-inch Rotaloc twist-style shank provides a secure, tool-free connection to compatible magnetic drill presses and annular cutter arbors. Trades that work in fabrication, ironwork, structural steel installation, and heavy mechanical service will reach for this cutter regularly.

The HOUGEN 17124 is suited for production and field use wherever precise, burr-minimal holes are required in metal plate, tube, and structural shapes. Typical applications include steel fabrication shops, ironworker and millwright trades, pipeline and mechanical contractors, and on-site structural steel work. The bright, uncoated finish is standard for cobalt cutters in this class and requires no special break-in procedure.

Key Features

• M42 cobalt construction provides superior heat resistance and extended tool life in hard and abrasive metals
• 3/4-inch cutting diameter with 3/4-inch depth of cut for full through-cuts on standard plate and tube stock
• 5/8-inch Rotaloc twist-style shank locks into compatible magnetic drill presses without a set screw
• Bright, uncoated finish — no coating adhesion concerns when cutting stainless steel or other reactive alloys
• Annular cutting geometry removes a core slug rather than reducing the full bore, reducing torque and heat compared to twist drills at the same diameter

Compatibility

Compatible with magnetic drill presses and arbors equipped with a 5/8-inch Rotaloc twist-style bayonet connection. Rated for use in mild steel, stainless steel, and steel.

Installation Notes

Annular cutters of this type are installed and serviced by machinists, ironworkers, millwrights, and mechanical contractors. Before mounting or removing the cutter, ensure the magnetic drill press is powered off and the magnet is disengaged. Insert the pilot pin before cutting to maintain cutter registration and aid slug ejection. Use cutting oil or coolant appropriate for cobalt tooling to extend cutter life and reduce heat buildup, particularly when cutting stainless steel.