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Zero Tolerance 0640 Emerson Folder Knife, CPM-20CV Satin Blade

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The Ernest Emerson designed 0640 is one of many new models released by Zero Tolerance in the tail end of 2018 and is a fresh new take on the classic EDC platform while making sure it stands out from the competition with the attributes and style. Each 0640 features an ultra-premium stainless steel blade that is deployed solely with a thumb disk complete with a titanium frame lock and hardened lockbar insert. This model features green carbon fiber composite overlay atop a stonewashed titanium frame, a clip point style blade in a satin finish with stonewash finished blade flats and the reversible pocket clip is designed for tip up carry only but is eligible for a left or right hand carry option. Made in the USA.


  • Blade Length: 3.75"
  • Overall Length: 8.5"
  • Blade Material: CPM-20CV Stainless Steel
  • Blade Finish: Satin / Stonewash
  • Handle Length: 4.75"
  • Handle Material: Titanium / Carbon Fiber
  • Weight: 4.4 oz.


  • 0640

    Posted by Cory on Dec 29th 2020


    What drew me to this knife was it's slender profile and handle shape, which looks a lot like an Inkosi or Sebenza. After trying it out at the storefront I knew it would be a great knife in hand, great ergonomics. The green/yellow carbon fiber did not really suit my fancy at first, but I ended up really liking the contrast with the titanium frame. Knife came very sharp out of the box, great 20CV steel. It did require a little break in time to smooth out the action on the frame lock, now it is smooth as glass. This one runs on bronze washers, a different direction than most of ZT's bearing knives. All in all a fanstastic knife. I'm considering getting another one.