Annular Cutters and Carbide-Tipped Hole Saws

Annular Cutters and Carbide-Tipped Hole Saws are the standard metal hole cutters in the industry.

CS Unitec's annular cutters have precision-ground flutes to provide efficient chip clearance, increasing drilling productivity and decreasing cutter breakage. Manufactured of hardened high-speed tool steel, 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 tool you are using. Please contact us with any questions.


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 Cutters 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