Tungsten Carbide Tip (TCT) Hole Saw

TCT (tungsten carbide tipped) hole saws have hard carbide teeth that stay sharp in stainless steel, thick mild steel and other tough materials where ordinary hole saws wear quickly. Fabricators, electricians and plumbers use them for panel, pipe and conduit holes. How...
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TCT (tungsten carbide tipped) hole saws have hard carbide teeth that stay sharp in stainless steel, thick mild steel and other tough materials where ordinary hole saws wear quickly. Fabricators, electricians and plumbers use them for panel, pipe and conduit holes.

How to choose a TCT hole saw

  • Material: metal-type TCT hole saws (Bosch, Benzwerkz and ARTU "for Metal") are for steel and stainless sheet. Carbide-gritted saws such as the Ingco HSB4061 set are for tile, cement board and similar hard materials.
  • Single or set: the Makita D-51297 (electrician) and D-51281 (plumber) assortment sets cover common sizes. Single saws suit repeat holes of one size.
  • Mandrel: some come with a mandrel, such as the S-Ks and KS Japan hole saws. Check before ordering.

Drilling tips

Use low speed, steady pressure and cutting oil, and clamp thin sheet so it does not spin. For general sheet metal and wood, bi-metal hole saws cost less. For many holes in thick plate, see annular cutters.

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