Zero Tolerance 0556 Automatic Knife

Zero Tolerance 0004 Fixed Blade

Zero Tolerance 0006 Fixed Blade

Zero Tolerance 0450-0470 Flipping Knives

Zero Tolerance 0350 Flipper Opening Knives

Zero Tolerance 0562 Flipper Opening Knives

Zero Tolerance 0022 Flipper Knife

Zero Tolerance 0044 Flipper Knife

Zero Tolerance 0117 DuraLock Folder

Zero Tolerance 0203 DuraLock Folding Knife

Zero Tolerance 0230 Slipjoint Knives

Zero Tolerance 0308 Flipper

Zero Tolerance 0357 Assisted Flippers

Zero Tolerance 0512 Automatic Folder

Zero Tolerance 0545 MagnaCut Folding Knife

Zero Tolerance 0707 Flipper Knife

Zero Tolerance 0762 TDS Flipper

Zero Tolerance 0990 Flipper Knife

Zero Tolerance Knife Storage Bag

Zero Tolerance Neck Gaiter

ZT Zero Tolerance Knives — Continuing a Tradition of Excellence

Since 1974, Kai USA has brought you what you have come to expect—the very highest quality and most innovative designs available in the knife market today.

With our line of Zero Tolerance Combat Knives, the legacy continues. We have teamed up with Ken Onion and Strider Knives to bring you a new series of professional-grade combat knives built to survive the harsh, real-world situations that confront you every day.

We call it ZT, Zero Tolerance. And that is our ultimate goal—Zero Tolerance in design, Zero Tolerance in function and Zero Tolerance in performance.

Whether you’re in the Military, Law Enforcement, Fire and Rescue, on a Response Team, or are an EMS professional, if you demand only the best from your equipment, you will quickly recognize the many benefits that ZT has to offer. Because when you’ve got a life-and-death job, you need tools that can give you an edge. Zero Tolerance Knives are those tools.

Frequently Asked Questions

Where are Zero Tolerance knives made?

All Zero Tolerance knives are proudly designed and manufactured in their facility in Tualatin, Oregon. The brand is committed to using American engineering and craftsmanship to produce every knife.

What makes ZT knives different from other brands?

Zero Tolerance knives stand out due to their robust construction and use of high-end materials. Key features include:

  • Premium Steels: ZT uses high-performance steels like CPM 20CV and MagnaCut for excellent edge retention and durability.
  • Professional-Grade Build: The knives are built to handle tough conditions, making them popular with military, law enforcement, and serious knife users.
  • Smooth Opening: Many models feature the KVT ball-bearing system for fast and reliable blade deployment.
What is the warranty on a ZT knife?

Zero Tolerance backs its knives with a Limited Lifetime Warranty. This covers defects in materials and manufacturing for the original owner. The warranty does not cover normal wear and tear, rust, or damage from misuse or modifications.

Can ZT knives be shipped internationally?

Due to manufacturer restrictions, we can only ship Zero Tolerance knives to addresses within the United States and Canada. We are unable to send these products to any other international locations.