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Part #: ZT0620 | Zero Tolerance Knives
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ZT0620: 0620 ZT/Emerson
Zero Tolerance Knives
Zero Tolerance and Emerson Knives put their hard-use heads together to create the 0620.

It features a blade of ELMAX powdered steel in a modified tanto style. ELMAX provides the extreme edge retention, high strength, and toughness a hard-use knife demands. High wear resistance in a steel usually means low corrosion resistance, but not with ELMAX. With this advanced steel, you get both properties—which makes it an excellent blade steel. DLC coating enhances performance even more and makes the blade non-reflective.

Of course, the 0620 features the patented Emerson "wave shaped feature" that enables the knife to be opened as it is removed from the pocket. By the time the knife has been fully withdrawn from the pocket, the blade is deployed and ready for use. A small wave-shaped tab on the top of the blade is built to catch on the pocket seam, opening the knife as it comes out of the pocket. This Emerson instant-open feature is a favorite among military, rescue, and law enforcement knife users.

The handle features a machined G10 front scale with a stonewashed titanium back. Blade lock up is ensured with a sturdy frame lock. Hardened steel inserts in the lockbar make it extra durable.
  • Blade Length: 3.6" (9.1 cm)
  • Closed Length: 4.9" (12.4 cm)
  • Overall Length: 8.5" (21.6 cm)
  • Locking Mechanism: Frame lock, hardened steel lockbar inserts
  • Blade Material: ELMAX, DLC coating
  • Handle Material: Black G10 front, stonewashed titanium back
  • Wave shaped opening feature
  • Thumb disk for manual opening
  • Reversible clip
  • Weight: 6.4" (181.4 g)
  • Made in USA
Frame Lock
Frame Lock
Developed by Chris Reeve, it functions like a liner lock but the lock is comprised of one of the handle scales. It's an extremely strong and easy to manipulate lock.
Pocket Clip
Pocket Clip
Includes a pocket clip for easy accessibility and a more secure carry.
Titanium Handles
Titanium Handles
A nonferrous metal, it's prized for its high strength to weight ratio and is often used on higher end knives.
Extremely fine grained powdered metal that strikes the balance between edge holding and corrosion resistance perfectly. Much more likely to get a rolled edge than have a chip develop.
Made in USA
Made in USA
This product is USA born and raised.
4.727 (11 reviews)
4.7 out of 5 stars
5 star
4 star
3 star
2 star
1 star
5 out of 5
May 29, 2017
Pros: Pocket Clip, Blade Material, Lock Ease of Use, Handle Feel, Overall Quality, Ease of Opening, Blade Sharpness
Cons: None
ZT wave
Never had a wave knife before and it really works. As a matter of fact be care pulling it out even if not trying to open it it may partially open. ZT is a beast very solid. I am still not thrilled with different colors on the 2 sides but whatever. It cuts hay string and open mail.
5 out of 5
Brian H.
Lemoyne, PA
Apr 24, 2017
Pros: Pocket Clip, Handle Feel, Blade Sharpness, Blade Material, Handle Material, Weight, Ease of Opening, Overall Quality
Cons: Ease of Opening, None
The quality and function you'd expect from ZT and Emerson
This knife is part of my EDC and is replacing an old Timberline Kelly Worden designed knife that I've carried for 8+ years. This ZT/Emerson blade with well worth the money I paid for it and I can't be happier with it. Sharp as sh^t out the box and the draw and "wave" open are smooth, although still a little stiff since I haven't worked with it much... it could just be me needing to get used to it. The two different handle materials might throw some people off, but I don't think it's that big of a deal. The pocket clip can be used on either side of the knife, but doesn't come with the tool to do the switch... good luck lefties! Once I get my draw figured out, this knife will be 110% awesome! (It's @ about 91% right now). A great buy and I have recommended it to friends, family, students and people on the street.
4 out of 5
Topeka, KS
Oct 20, 2016
Pros: Blade Sharpness, Lock Type, Handle Material, Overall Quality, Pocket Clip, Ease of Opening, Handle Feel, Weight, Lock Ease of Use, Blade Material
Cons: None
Great Knife
The knife is very sturdy and extremely sharp. For a knife that is over 6oz, it certainly feels lighter in hand. The wave feature works as advertised. The coating is also very nice. I love this knife. Only bad thing would be some very light chatter marks on the bottom of the titanium liner on the g-10 side, otherwise perfect. Super smooth
Read all 11 Reviews »
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0620 Series