Annular Cutters and Carbide-Tipped Hole Saws

Annular cutters and carbide-tipped hole cutters drill structural steel 3X faster than twist drills with a longer tool life, a more accurate hole, and a cleaner, burr-free finish.

CS Unitec's annular cutters have precision-ground cutting edges and flutes to provide faster cutting, efficient chip clearance, less chatter and increased drilling productivity. Manufactured of hardened high-speed tool steel or carbide tipped these metal hole cutters produce a burr-free finished hole without predrilling or stepdrilling.


Benefits of CS Unitec’s Annular Cutter Design:

  • Double-action tooth geometry cuts, splits and ejects chips more efficiently
    • increasing cutting speed
    • reducing tooth load
    • minimizing tool wear
    • lengthening cutter life
  • Engineered with a tapered inner wall for smooth, easy slug ejection
  • Center hole for pilot pin accurately aligns for the cutters, allows for internal lubrication and removes the slug.

When selecting a metal hole saw, make sure it is compatible with both the material you are drilling or driving and the power tool you are using. Please contact us with any questions about our heavy-duty annular cutters.


6-Series HSS High-Speed Steel Cutters

Drill holes 3 times faster than twist drills

  • CNC precision ground for fast penetration, accuracy and long life
  • Produce reamed-quality burr-free holes & solid slugs
  • Eliminate costly pilot holes & step drilling
8-Series ARMOR-PLATED TiAlN Cutters

Withstands higher working temperatures and prevents cold weld

  • 3 to 4 times longer tool life with TiAlN Carbide coating
  • Drill with less friction and more power
  • Ideal for structural steel and hard metal
9-Series TCT Hornet Tungsten Carbide-Tipped Cutters

Cutter sizes up to 5-1/8" dia. and 8" depth

  • Ideal for large diameter holes and drilling steel with rust or paint
  • Drill steel, stainless steel and hard metals
  • Available in all sizes (fractional and metric)
Tungsten carbide-tipped with one-touch shank
  • One-touch shank
  • Tungsten carbide-tipped
  • No-tool cutter replacement
Unibroach® 7-Series Cobalt Cutters
  • ​Available for hole sizes up to 5" dia.
  • Made with 5% cobalt to increase resistance to wear
  • Excellent results when drilling high-tensile steel
Carbide-Tipped Rail Cutters
  • Carbide-tipped for long life
  • Quick, efficient cutting through rust and corrosion
  • Round, clean, burr-free holes - better than spade drills
6-Series Unibroach® HSS Stack Cutters
  • High-Speed Steel (HSS)
  • Designed to cut multiple layers of stacked material
  • Available in 1", 2" and 3" depths
9-Series TCT Hornet Tungsten Carbide-Tipped Stack Cutters
  • Tungsten Carbide-Tipped
  • Designed to cut multiple layers of stacked material
  • Available in 2", 3" and 4" depths
47-Series Lightning Rail Cutters
  • Cobalt for increased wear resistance
  • Round, clean, burr-free holes - better than spade drills
  • Turn-style mounting for quick installation without tools
Automatic Cooling Arbor
  • For automatic internal cooling or manual cooling
  • For annular cutter shank sizes of 3/4" or 1-1/4"

Carbide-tipped hole saws - Cut holes in steel plate

  • 1-Series: 9/16" - 4-1/2" dia.; 1" effective length
  • 2-Series Extra Heavy Duty: 9/16" - 1-3/8" dia.; 9/16" effective length
Extension on Mag Drill
  • Extend cutter reach up to 18"
  • For magnetic drills with 3/4" arbor bore or MT3
Cutter with Pilot Pin set
  • For cutter dia. ranging from 7/16" to 4" DOC
  • Milled channel supplies internal lubrication
Quick-Lock Arbor application
  • Keyless for fast, no-tools changeover
  • Automatic internal cooling