Hougen 12158 Annular Cutter 1-13/16 in Hss Weldon Shank

Product Description

The HOUGEN 12158 is a high speed steel annular cutter designed for fast, clean through-holes in metal plate and structural steel. It uses a hollow cutting geometry that removes a core plug rather than reducing the entire hole to chips, which dramatically reduces cutting force and heat compared to twist drills. The 1-13/16 inch cutting diameter and 1 inch depth of cut make it well suited for bolt holes, conduit knockouts, and structural connection work. The bright uncoated HSS construction handles mild steel and general steel fabrication applications without the need for specialized tooling setups.

This cutter is used in magnetic base drilling machines and drill press setups on fabrication shop floors, ironworking job sites, and mechanical rooms. The Weldon flat shank with two flats locks into compatible arbors and prevents slippage under high torque. Typical applications include steel plate drilling for structural connections, electrical enclosure knockouts, and mechanical equipment mounting holes in mild steel and standard structural steel sections.

Key Features

• 1-13/16 inch cutting diameter produces clean, burr-minimal holes in a single pass
• 1 inch depth of cut accommodates standard plate and structural steel thicknesses
• High speed steel construction provides durability on mild steel and general structural steel
• Weldon flat shank with 2 flats locks securely into mag drill arbors to prevent rotation under load
• 3/4 inch shank diameter fits standard Weldon-style arbors used across most magnetic base drill platforms
• Bright uncoated finish allows easy visual inspection of cutting edge condition

Compatibility

Designed for use with magnetic base drills and drill press arbors that accept a 3/4 inch Weldon flat shank. Rated for material applications in mild steel and general steel. Verify arbor shank size compatibility before installation.

Installation Notes

Annular cutters are installed by licensed tradespeople and qualified fabricators using compatible mag drill arbors — confirm the arbor accepts a 3/4 inch Weldon flat shank before mounting. Always engage the arbor set screws fully against both Weldon flats before applying power. Use an appropriate cutting fluid on the workpiece to extend cutter life and reduce heat buildup. Secure the workpiece and the magnetic base drill firmly before operation to prevent movement during the cut.