Zero Tolerance Hinderer 0566 Assisted Opening Knife G-10 (3.25" Stonewash) ZT

MSRP: $179.95
Our Price: $144.00
In Stock!
Add to Wishlist
Item #BHQ-15192


  • Overall Length:7.70"
  • Blade Length:3.25"
  • Blade Thickness:0.12"
  • Blade Material:CPM-S35VN
  • Blade Style:Drop Point
  • Blade Grind:Flat
  • Finish:Stonewash
  • Edge Type:Plain
  • Handle Length:4.45"
  • Handle Thickness:0.44"
  • Handle Material:G-10
  • Color:Black
  • Frame/Liner:Stainless Steel
  • Weight:5.30 oz.
  • User:Right Hand, Left Hand
  • Pocket Clip:Tip-Down, Tip-Up
  • Knife Type:Spring Assisted
  • Opener:Flipper
  • Lock Type:Frame Lock
  • Brand:Zero Tolerance
  • Model:0566
  • Model Number:0566, zt0566, zt566
  • Designer:Rick Hinderer
  • Country of Origin:USA
  • Best Use:Everyday Carry
  • Product Type:Knife


The Zero Tolerance 0566 is a Hinderer designed assisted opening folder. This knife is more compact than the larger 560/561. The blade is stonewashed S35VN steel which offers excellent edge retention, strength, and toughness. The front scale is textured G-10. The back is stainless steel with a frame lock and a lockbar stabilizer. Quad-mounting system with deep carry pocket clip.


Customer Reviews

Write a review for this item
Fast snap
dale o.
Lock up like a safe, snaps out like a bullet. Great fit in the hands. Only complaint is maybe have some more choice of steels an blade shapes
Little 0560
Jason C.
This knife resembles a smaller version of the 0562 which resemble a smaller version of the 0560/0561. This is a great knife for its size especially for a person who likes assisted knives. This knife is one where you have to learn to appreciate a rick hinderer design.
Cryo on steroids!!!
Michael R.
This was my first ZT, and it is everything Iíve been wanting. The speed safe opening is smooth and the blade with the S35VN steel is amazing .
Beast of a knife
Joe F.
Built like a tank. Super sharp. Snappy action. Still a little stiff after about a year of use but I donít mind that. Little heavy for some people
Great EDC
Donald M.
Great knife. I have tried both de-assisted as well as the speed safe. As said in the comments below if you do de-assist the knife it will flip like most Hinderer products and you will have to push down on the flipper tab to get a reliable flip. My only complaint is that I wish ZT would make the lock side out of titanium to reduce weight.
Great knife, ditch the spring
Travis M.
The 0566 is probably the most practical knife ZT has produced. The size is right for most states and it doesn't look very threatening. The torsion bar makes for a snappy action, but it's also ridiculously stiff. I had better luck removing the torsion bar and letting the detent keep the knife closed.
Great EDC
Michael M.
Great knife for edc! I have larger hands, and it feels great in hand. Also canít beat made in the great USA!!!
Perfect HD/EDC knife
Jamie A.
I love this knife. I have large hands and it just feels right in my hands. The 3.25 inch blade is the sweet spot for edc in my opinion. First thing I did was disassemble and removed torsion bar and lubed with some gun oil. It de-assisted very well. Took about a night of flipping it to break it in well. It flips like a hinderer so you have to press the flipper down then in.. it flies out great with the thumb studs as well. This is a well made knife that is my new carry. The good news for the steel construction while it is a little heavier than titanium is it won't wear out near as quickly if ever. Also now it is made with American steel, s35vn. I wanted a knife completely made in USA with a good blade. If you are on the fence about it because of the weight remember you can always skeletonize it with a drill bit. I'm glad I went with this one instead of the 562.
Robert S
Robert S.
Couldn't wait to get this knife. Quality looks great. Unfortunately it is impossible to open with the thumb studs. So stiff it takes both hands to open it. That's the only complaint. Otherwise I would love it.
Fantastic EDC knife!
Matthew C.
Like the other review said, the action is pretty dang stiff at first but it doesn't take to long to break in. It fits perfectly in my hand and I even have larger hands. It's almost like it was made for me. locks up nice and tight, has good weight to it and so on. The only minor annoyance I had is in the G-10, compared to everything else I have with G-10 scales this G-10 isn't really that grippy, not bad enough to warrant a lower star review and not quite bad enough to bother with new scales... maybe... I haven't had it to long so we will see. I just wish the G-10 was a bit more rough and grippy.
A Hinderer you can actually carry
John S.
I am very impressed with the smaller 0566, much more edc friendly than the 0560/0561 the ergonomics are still just as good- just melts in your hand. The flipper is a bit stiff when you first get it- but it will break in eventually. Also, if you carry in the tip up position the pocket clip can press against the lock bar making it difficult to deploy- adjusting the pocket clip so it's not so tight helps- or carrying in the tip down orientation, then the pocket clip isn't resting on the lock bar. I haven't had much luck converting it to a manual flipper either, just doesn't flip very well without the assist- takes a lot of wrist action. So i just left it assisted and carry tip down- works perfectly.
robert b.
I love this knife it is a very solid well built knife like all Hinderer ZT models. I have never been into spring assist but this one I love there is no rattle of the torsion bar and just enough tension to give a little extra snap when opening. The elmax blade came very sharp out of the box. This is my new edc I look forward to many years of satisfaction from this tool. Thank you Bladehq and Zero tolerance.