Hougen 12121 Annular Cutter 21/32 in Hss Weldon Shank

Product Description

The HOUGEN 12121 is a high speed steel annular cutter designed for clean, fast hole-cutting in mild steel and general steel stock. It accepts a 3/4 inch Weldon flat shank with 2 flats for positive tool retention in compatible magnetic drill presses and rotary broaching equipment. The cutter diameter is 21/32 inch (0.6562 inch decimal) with a 1 inch depth of cut. The bright, uncoated finish is standard for general-purpose HSS cutters operating at appropriate surface speeds with cutting fluid. Installation and use are handled by machinists, fabricators, and maintenance trades working with structural or plate steel.

This cutter is suited for production and maintenance applications where a clean-walled, burr-minimized through-hole is required in mild steel or structural steel plate. Annular cutters remove only a core of material rather than the full disc, reducing cutting force and heat compared to twist drills at equivalent diameters. The 1 inch depth of cut accommodates typical plate and structural section thicknesses encountered in fabrication and field work. The Weldon flat shank interface is the standard connection for magnetic drill press chucks and drill press arbors designed for annular tooling.

Key Features

• 21/32 inch (0.6562 inch) cutting diameter for precise hole sizing
• 1 inch depth of cut handles common plate and structural section thicknesses
• High speed steel construction provides durability in mild and general steel applications
• 3/4 inch Weldon flat shank with 2 flats ensures positive drive and minimal slippage
• Bright uncoated finish — no coating interference when using cutting oil or coolant

Compatibility

Designed for use in magnetic drill presses and annular cutter arbors accepting a 3/4 inch Weldon flat shank. Rated for material application in mild steel and general steel stock.

Installation Notes

Annular cutters should be installed and operated by qualified machinists or maintenance trades familiar with magnetic drill press operation. Always secure the magnetic base fully to the workpiece and confirm the cutter is fully seated and locked in the arbor before beginning a cut. Use cutting oil or appropriate metalworking fluid to extend tool life and manage heat. Power down and de-energize the drill completely before changing cutters or inspecting the tool.