Annular cutters, also known as core drills, core cutters or broach cutters, drill large diameter holes quickly and more accurately than conventional twist drills or hole cutters. By cutting an annular groove at the periphery of a hole, a solid core slug is left at the center. Unlike twist drills or hole saws, no pre-drilling or step drilling is required to produce a precise, nicely-finished hole. The hollow, multi-edged cutters are ideally suited for use with magnetic drill presses, though they can also be used with mills, CNC machines and lathes. Shop our large selection of annular cutters and core drill sets manufactured by Norseman Drill & Tool today. Filtering out the size, style, material and grade makes it easy to find the correct cutter. At AFT, we have the drilling products you need to get the job done!
Choosing an Annular Cutter
M2 High Speed Steel Annular Cutters
The high tungsten content of these standard core cutters offers abrasion resistance that results in durability and long tool life. These all-purpose core drills are suitable for cutting mild and structural steel, aluminum and low BHN stainless steel. M2 HSS annular cutters are available in diameters from 7/16" to 2-3/8" and in either 1" or 2" lengths.
M35 Cobalt Annular Cutters
Similar to M2 cutters, M35 core drills have 6% cobalt added to the steel alloy they are manufactured from as well as a gold finish. These additions deliver increased heat resistance which produces increased hardness that enables the drill to tackle tough jobs. M35 annular cutters are available in diameters from 7/16" to 2-1/16" and lengths of either 1" or 2".
M42 Super Cobalt Annular Cutters
Molybdenum-chromium vanadium tungsten alloy with 8% cobalt offers superior red-hot hardness over conventional high speed steel, making these core drills suitable for drilling even the most difficult materials, including structural steel, stainless steel and cast iron without sacrificing speed or tool longevity. Find diameters ranging from 7/16" to 2-3/8" in lengths of either 1" or 2".