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


  • Acid washed drop point blade made from ELMAX/CPM S35VN steel.
  • Flipper opener and SpeedSafe assisted action.
  • Black G-10 scale and a titanium frame.
  • Secure frame lock.
  • Four-way reversible pocket clip.


The Zero Tolerance 0566 is a Hinderer designed assisted opening folder. This knife is more compact than the larger 560/561. The blade is premium CPM-S35VN which offers excellent edge retention, strength, and toughness. This knife has a frame lock and a lockbar stabilizer.

Zero Tolerance Spring Assisted Knives have all the Zero Tolerance quality you expect with snappy spring-assisted opening action!

Earlier production runs of this knife were made with ELMAX stainless steel blades. Current production uses CPM S35VN. Which blade steel your knife has depends on when it was made.

Item #BHQ-21672
Our Price: $149.99
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  • Overall Length: 7.70"
  • Blade Length: 3.25"
  • Blade Thickness: 0.12"
  • Blade Material: CPM S35VN
  • Blade Style: Drop Point
  • Blade Grind: Flat
  • Finish: Acid Wash
  • Edge Type: Plain
  • Handle Length: 4.45"
  • Handle Thickness: 0.44"
  • Handle Material: G-10
  • Color: Black
  • Frame/Liner: Steel
  • Weight: 5.30 oz.
  • User: Right Hand, Left Hand
  • Pocket Clip: Tip-Up, Tip-Down
  • Knife Type: Spring Assisted
  • Opener: Flipper
  • Lock Type: Frame Lock
  • Brand: Zero Tolerance
  • Model: 0566
  • Model Number: 0566BW, zt0566BW, zt566BW
  • Designer: Rick Hinderer
  • Country of Origin: USA
  • Best Use: Everyday Carry
  • Product Type: Knife

Customer Reviews

Whats not to love.
Jonathan H. on Feb 22, 2019

I have had this for a year and a half. Great knife, I got one in Elmax, love how sharp it is and the Blackwash looks good. I de-assisted mine and think it's even better as a manual flipper. I also just added the 0562 to my collection and plan on getting more Hinderer designs, KAI and ZT do a great job with his designs for a fraction of the name brand mid techs.

My Go-To EDC
James H. on Aug 24, 2018

I have a lot of knives, but this is my go-to for every day carry. It is a solid knife that seems to be the perfect size for my hands. I like black blades, but most coated knives scratch off and look bad. The black wash on this is great and won't scratch off like a coating. It is sharp and super smooth to open. A great all around folder.

Favorite knife I own
Logan W. on Jan 19, 2018

Absolutely love the design. I de-assisted the knife which is very simple. This is by far my favorite knife I own.

A great knife
Jonathan P. on Apr 2, 2017

Overall this is an excellent knife. Good steel and excellent lockup. The only thing I would say to de-assist it . I waited about a week and should have done it the first day. It took all of 1 minute. And the knife flips amazingly. I think this is the way ZT should have made the knife

Lucas S. on Jan 20, 2017

As usual I received my knife from Blade HQ in record time!!! As for the knife..... whooooo wheee i like i like!!!! I have been satisfied beyond expectations by ZT once again. I am an official ZT junkie now.

*UPDATE* Got a lemon replaced!
Sean V. on Oct 27, 2016

Got my 0566BW today; was super excited to start putting it ti use. Blade looks good, centering is excellent, finishing is good, hair-shaving sharp, swapped the clip to the other side (I'm a lefty), and good to go! Except the blade rattled. Not side-to-side, either. Top to bottom. Checked all the fasteners, still there. Checked the lockbar/blade mating area, and there's a gap between the lockbar face and the blade, allowing the blade to rattle up and down as the ends of the lockbar face and blade mating face touch each other. The blade's mating face looks all scratched up, too. So I'm the one lucky guy who gets the reject from the production line. Had to happen to someone; no product line is 100% perfect. Guess that's me. I've already emailed BHQ, and I'm sure they'll replace it, as they're been uniformly excellent with customer and warranty service in the past. Just a bummer that I have to send the knife back out having owned it for less than a day. Moral of the story is, check those mating surfaces! *UPDATE* Take note, because this is how customer service should be handled. I emailed BHQ about the knife, described the problem, and they were on it- no questions asked. Ship it back and we'll replace it, or refund you, or change you to a totally different knife if you want. I went for the same knife, and they preemptively offered to inspect it for fit and function before shipping. Emailed shipping updates, constant contact- that's how you handle a problem; BHQ was uniformly excellent throughout. The new knife is absolutely flawless. This should be an example to other online retailers about how to handle issues, returns, and the like.

Best EDC knife
Evgenii K. on May 17, 2015

As for me, the Zero Tolerance 0566BW is a best EDC knife.

Work Horse
Gman 1. on Oct 1, 2019

This blade is a beast of a work horse. If you're looking for a folder that feels like a real knife that can do anything, this would be it. Also, aesthetically, it is a thing of beauty, especially with the dark smokey gray and black shades, the black stallion of blades. Love it!

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