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Toolkits customized to your airframe kit - orders over $1500 get 8% off.

Single Flute Countersink Cutter

Single Flute Countersink Cutter (SKU: CCSF30)

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Product Description

  • Single flute won't leave wavy chatter marks in the bottom of the countersink like the 3-flute will.
  • Single flute are much more aggressive, do not push on them like the 3-flute!
  • 100 degree single flute.
  • 3/8 body diameter.
  • 1/4-28 thread
  • Use with micro stop units (CT-196, CT-360& CT-365).

Notice:  Due to the geometry of  these cutters the pilot is back cut a bit making the pilot weaker (especially the #40).  We find that about 10% of the #40 pilots end up having the pilots break off when used under a side load.  CAT does not warranty for this, use at your own risk.

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Customer Reviews

Based on 6 reviews
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M
Mehrdad
These do a much cleaner countersink than the standard three cutter type

These do a much cleaner countersink than the standard three cutter type.

E
Earl J
Smooth Countersinks

I've been using three-flute countersinks, and decided to give single-flute countersinks a try. Very smooth results. The comparison would be shaving your face with a semi-sharp hatchet versus using a multi-blade razor. I'm sold!

T
Tommy Madsen
The Best

I got a single flute countersink with my original tool set from Cleaveland Tools. Unfortunately it broke recently and I ended up using a competing product. It was terrible. Would not clear the cut scrap and scratched every other hole. Really bad. Glad I got my replacement from Cleaveland. Works perfectly.

T
Timothy Higgins
Zero flutes ?!?

I’ve been super frustrated with chatter from my three flute countersink, and was at my wits end. I’d tried everything it seems. These babies do the trick, very pretty and consistent countersinks. I do see they can be fragile, but so far, so dang good.

J
Jeremy
Worth it

Definitely get this if you want to avoid chatter and have a smooth countersink. I bought this to countersink my 7 trailing edge and it did not disappoint. I got the #40 and I did not have the tip break off. But as they say YMMV. Worth it!

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