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    • Zero Tolerance

    Zero Tolerance knives, ZT knife, ZT 0350, ZT 0562, ZT 0640, Rick Hinderer ZT, Dmitry Sinkevich ZT, CPM MagnaCut folder, KAI USA knife, premium tactical folder, authorized Zero Tolerance dealer

    Zero Tolerance was founded in 2006 as the premium tactical tier of Kai USA — the same Tualatin, Oregon company that produces Kershaw knives. Where Kershaw delivers industry-leading performance per dollar, Zero Tolerance makes no compromises at all. Every Zero Tolerance knife is designed, engineered, and manufactured exclusively in the United States — no exceptions, no offshore models, no budget line. The result is a catalog built entirely on premium steels like CPM MagnaCut, CPM-20CV, and CPM-S35VN, titanium and carbon fiber handle materials, and some of the most celebrated designer collaborations in the production knife industry. Rick Hinderer, Dmitry Sinkevich, Les George, and Jens Anso have all brought their custom design expertise to the Zero Tolerance platform — delivering grail-level aesthetics and performance at production pricing. Knifeworks is a proud authorized Zero Tolerance dealer — every knife we sell is 100% genuine, sourced directly from Kai USA in Tualatin, Oregon.

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    Authorized Zero Tolerance Dealer Every knife is 100% genuine — sourced direct from Kai USA in Tualatin, Oregon. No gray market.
    100% USA-Made — No Exceptions Every Zero Tolerance knife is designed, engineered, and assembled in Tualatin, Oregon. No offshore models. Ever.
    ✏️
    Elite Designer Collaborations Rick Hinderer, Dmitry Sinkevich, Les George & more — grail-level custom design DNA at production pricing.
    ⭐
    Full Warranty Support Zero Tolerance's limited lifetime warranty honored on every purchase — no runaround, no gray market risk.

    The Complete Zero Tolerance Buyer's Guide (2026)

    Everything you need to choose the right Zero Tolerance knife — from the Kai USA family story and designer collaborations to premium steels, handle materials, lock types, and the upgrade path from Kershaw. Click any topic to expand.

    Why Zero Tolerance? The No-Compromise Standard for USA-Made Premium Folders ﹢

    Zero Tolerance was founded in 2006 with a single mandate — build the best production folder possible without any compromise on materials, manufacturing, or performance. In 20 years the brand has never deviated from that mandate. Every knife is USA-made. Every knife uses premium steel. Every handle is titanium, carbon fiber, or G-10. There is no budget line, no offshore model, and no exception to the standard.

    The brand sits at the apex of the Kai USA family — the same Tualatin, Oregon company that produces Kershaw knives. The relationship is deliberate and complementary. Kershaw is where serious knife buyers start. Zero Tolerance is where they arrive when performance becomes the only metric that matters.

    • 100% USA manufacturing: Every Zero Tolerance knife is designed, engineered, and assembled in Tualatin, Oregon — the same facility that has produced premium American knives since 1974
    • No compromises on steel: CPM MagnaCut, CPM-20CV, CPM-S35VN, and M390 — the most demanding collector steels in production knife history
    • Elite designer collaborations: Rick Hinderer, Dmitry Sinkevich, Les George, Jens Anso — the custom knife world's most respected makers on a production platform
    • SpeedSafe® DNA: The same torsion bar assisted opening system perfected at Kershaw — now deployed on premium titanium platforms at Zero Tolerance
    The Zero Tolerance Standard A Zero Tolerance knife is not purchased because it is the most affordable option. It is purchased because the buyer has decided they want the best available production folder in its category — full stop. Every ZT is a statement about what a production knife can be when no corners are cut and no budget constraints are imposed.
    Elite Designer Collaborations: Rick Hinderer, Dmitry Sinkevich & More ﹢

    Zero Tolerance's designer collaboration program is the most prestigious in the production knife industry — each partnership bringing a custom knifemaker whose individual pieces sell for $500 to $3,000+ to the Zero Tolerance manufacturing platform at production prices. The gap between a custom Hinderer XM-18 and a ZT 0562 is not design quality — it is production scale.

    Designer Background Signature ZT Models Design Legacy at ZT
    Rick Hinderer Hinderer Knives — Ohio. Firefighter, EMT. XM-18 is one of the most sought-after custom folders ever made. ZT 0562, ZT 0562CF, ZT 0562Ti, ZT 0350 Flipper tab deployment, titanium framelock, tactical ergonomics — the defining ZT aesthetic
    Dmitry Sinkevich Russian custom maker — European modernist aesthetic, precision engineering ZT 0640, ZT 0470, ZT 0230 Clean European lines, slim carry profiles, carbon fiber handles — the refined ZT alternative
    Les George Military background — US Army. Practical tactical design, hard use geometry ZT 0392, ZT 0095BW Military-grade ergonomics, proven field geometry, hard use focus
    Jens Anso Danish custom maker — Scandinavian minimalism, liner lock expertise ZT 0888, select liner lock models Scandinavian clean aesthetic, liner lock refinement, European design perspective
    Elijah Isham Idaho-based custom maker — modern EDC and tactical design ZT 0235, select modern EDC models Contemporary EDC geometry, refined carry profiles
    Rick Hinderer — The ZT Icon Rick Hinderer's collaboration with Zero Tolerance produced the ZT 0562 — widely considered one of the finest production folders ever made at any price point. Hinderer's custom XM-18 in titanium costs $600–$1,200 depending on configuration. The ZT 0562 delivers the same fundamental geometry, the same flipper tab deployment, and the same titanium framelock in a production knife under $300. For collectors who want Hinderer DNA without the custom waitlist — the ZT 0562 is the definitive answer.
    Zero Tolerance Steel Guide: CPM MagnaCut, CPM-20CV, S35VN & More ﹢

    Zero Tolerance uses only premium steels — every alloy in their catalog represents a deliberate choice to maximize performance in a specific area. Here is the complete breakdown of what you will find in our current ZT catalog.

    Steel Found On Edge Retention Corrosion Resistance Ease of Sharpening
    CPM MagnaCut Select 2025–2026 premium models ★★★★★ ★★★★★ ★★★★☆
    CPM-20CV ZT 0562, select Hinderer and Sinkevich models ★★★★★ ★★★★★ ★★★☆☆
    CPM-S35VN ZT 0350, select standard production models ★★★★★ ★★★★☆ ★★★★☆
    M390 Select premium and limited edition models ★★★★★ ★★★★★ ★★★☆☆
    CPM-S30V Select accessible ZT models ★★★★☆ ★★★★☆ ★★★★☆
    CPM-20CV — The ZT Standard Bearer CPM-20CV is the steel most closely associated with the Zero Tolerance identity — a powder metallurgy stainless steel with a chromium content of approximately 20% and vanadium around 4%. The result is exceptional edge retention combined with outstanding corrosion resistance — a combination that places it at the top tier of production knife steels in 2026. On a ZT 0562 or ZT 0640, CPM-20CV is heat treated to Kai USA's precise protocol — extracting performance that the alloy specification alone does not fully communicate.
    Handle Materials & Lock Types: Titanium, Carbon Fiber & Framelock ﹢

    Zero Tolerance's handle material and lock type selections reflect the same no-compromise philosophy as their steel choices. Every material is chosen for maximum performance — weight, strength, and tactile quality all considered simultaneously.

    Handle Material Weight Durability Aesthetic Found On
    Titanium Light ★★★★★ Premium — anodized color options ZT 0562Ti, ZT 0350, most flagship models
    Carbon Fiber Very Light ★★★★★ Premium — woven pattern visual ZT 0562CF, ZT 0640CF, select Sinkevich models
    G-10 Medium ★★★★★ Tactical — textured, grippy ZT 0392, select hard use models
    Titanium + Carbon Fiber Light ★★★★★ Premium — mixed material visual Select premium collaboration models
    Lock Type How It Works Strength Found On
    Frame Lock Titanium handle itself acts as lock bar — engages blade tang directly ★★★★★ ZT 0562, ZT 0640, most titanium handle models
    Liner Lock Steel liner inside handle flexes behind blade tang ★★★★☆ Select G-10 and non-titanium models
    SpeedSafe® + Frame Lock Torsion bar assisted opening into titanium frame lock ★★★★★ ZT 0350 and SpeedSafe® assisted ZT models
    Why Titanium Frame Lock Is the ZT Standard A titanium frame lock uses the handle material itself as the lock bar — the titanium flexes behind the blade tang when open, engaging with a hardened steel insert for maximum lockup strength. Because titanium is both strong and slightly springy, a well-fitted titanium frame lock delivers the most positive, rattle-free lockup of any production folder lock. On a Zero Tolerance knife the titanium frame lock is machined to tolerances that most production brands cannot achieve — the result is a lockup that feels more like a fixed blade than a folder.
    Zero Tolerance vs Kershaw: The Kai USA Family Upgrade Path ﹢

    Zero Tolerance and Kershaw are sister brands under Kai USA in Tualatin, Oregon. Understanding when to choose Zero Tolerance over Kershaw — and what the upgrade delivers — helps serious buyers make the right decision for their collection and carry needs.

    Feature Kershaw Zero Tolerance
    Manufacturing USA and Asia — varies by model USA only — Tualatin, Oregon exclusively
    Price Range $30–$150 $150–$400+
    Primary Steels 8Cr13MoV, D2, 14C28N, CPM-S30V CPM MagnaCut, CPM-20CV, CPM-S35VN, M390
    Handle Materials Aluminum, GFN, G-10 Titanium, Carbon Fiber, G-10
    Lock Types Liner Lock, Frame Lock, SpeedSafe® Titanium Frame Lock, Liner Lock, SpeedSafe®
    Designer Collaborations Ken Onion, Rick Hinderer, Emerson Rick Hinderer, Dmitry Sinkevich, Les George, Jens Anso
    Tolerances & Fit Excellent for price point No-compromise — among the tightest in production knives
    Best For Best value in the market — everyday carry, first serious folder No-compromise performance — collectors, serious users, premium carry
    The Natural Upgrade Moments Move from Kershaw to Zero Tolerance when: you have carried your Kershaw Blur for two years and want to know what titanium and CPM-20CV feel like. When you want a Rick Hinderer design but cannot wait for a custom. When you want the best USA-made folder under $300 with no asterisks. The ZT 0562 is the most common first Zero Tolerance purchase for Kershaw Blur owners — and almost no one who makes that move ever goes back.
    Top Zero Tolerance Models: ZT 0562, 0640, 0350 & More ﹢

    Zero Tolerance's model numbering system uses a four-digit code — the first digit indicates the handle material family and the remaining three digits identify the specific model. Here is a guide to the key models in our current ZT catalog.

    Model Designer Blade Steel Handle Best For
    ZT 0562 Rick Hinderer 3.5" Tanto CPM-20CV Titanium The flagship — Hinderer DNA in titanium at production pricing
    ZT 0562CF Rick Hinderer 3.5" Tanto CPM-20CV Carbon Fiber 0562 in carbon fiber — lighter carry, same Hinderer geometry
    ZT 0640 Dmitry Sinkevich 3.4" Drop Point CPM-20CV Titanium European refined aesthetic — the refined alternative to the 0562
    ZT 0350 Rick Hinderer 3.25" Drop Point CPM-S35VN Titanium SpeedSafe® assisted — fastest ZT deployment, most accessible entry
    ZT 0392 Les George 3.75" Drop Point CPM-S35VN G-10 + Titanium Hard use tactical — military ergonomics, largest blade in standard lineup
    ZT 0470 Dmitry Sinkevich 3.25" Drop Point CPM-S35VN Carbon Fiber Slim Sinkevich carry — lightweight carbon fiber, refined EDC
    The ZT 0562 vs ZT 0640 — The Most Common ZT Decision The ZT 0562 and ZT 0640 are the two most compared Zero Tolerance models in 2026. Both use CPM-20CV in titanium handles at similar price points. The 0562 is Rick Hinderer's tactical tanto geometry — purposeful, aggressive, and unmistakably American tactical. The 0640 is Dmitry Sinkevich's European drop point — refined, slim, and equally at home in a boardroom as a field kit. Choose the 0562 for Hinderer DNA and tactical carry. Choose the 0640 for a more refined everyday aesthetic. Both are among the finest production folders made anywhere in the world in 2026.
    Choosing Your Zero Tolerance: Quick Reference by Use Case ﹢

    Not sure which Zero Tolerance is right for your carry style, intended use, or budget? Match your needs to the right model from our current catalog.

    Use Case Designer Steel Budget Our Top Pick
    First Zero Tolerance Rick Hinderer CPM-S35VN $150–$200 ZT 0350
    The Flagship Hinderer Rick Hinderer CPM-20CV $250–$300 ZT 0562
    Hinderer — Lighter Carry Rick Hinderer CPM-20CV $250–$300 ZT 0562CF
    Refined European EDC Dmitry Sinkevich CPM-20CV $230–$280 ZT 0640
    Slim Carbon Fiber EDC Dmitry Sinkevich CPM-S35VN $180–$230 ZT 0470
    Hard Use Tactical Les George CPM-S35VN $200–$260 ZT 0392
    CPM MagnaCut Premium Various CPM MagnaCut $280–$350+ Current MagnaCut ZT model
    Upgrade from Kershaw Blur Rick Hinderer CPM-S35VN $150–$200 ZT 0350 — SpeedSafe® + titanium

    Zero Tolerance Knives: Frequently Asked Questions

    Expert answers from the team at Knifeworks — your authorized Zero Tolerance dealer for the full lineup including Rick Hinderer collaborations, Dmitry Sinkevich designs, and the complete USA-made premium catalog.

    Where are Zero Tolerance knives made? ﹢

    Every Zero Tolerance knife is designed, engineered, and assembled in Tualatin, Oregon, USA — the Kai USA facility that has produced premium American knives since 1974. Zero Tolerance has never produced an offshore model and has no budget line — every knife in the catalog is USA-made without exception. This is one of the most uncompromising USA manufacturing commitments of any production knife brand in the industry.

    What is the difference between Zero Tolerance and Kershaw? ﹢

    Zero Tolerance and Kershaw are sister brands under Kai USA in Tualatin, Oregon — same parent company, same engineering resources, deliberately different tiers. Kershaw targets accessible everyday carry at $30–$150 with steels from 8Cr13MoV to CPM-S30V, manufactured in both USA and Asia depending on model. Zero Tolerance targets the premium tier at $150–$400+ with steels including CPM MagnaCut and CPM-20CV, titanium and carbon fiber handles, and exclusively USA manufacturing.

    The natural upgrade path is from Kershaw to Zero Tolerance — many serious collectors carry Kershaw daily and own one or two ZT knives as their premium pieces. The ZT 0350 with SpeedSafe® torsion bar is the most common first Zero Tolerance for Kershaw Blur owners — same assisted opening DNA, dramatically elevated materials.

    What is the best Zero Tolerance knife to buy first? ﹢

    For a first Zero Tolerance the ZT 0350 is the most natural entry point — Rick Hinderer design DNA, CPM-S35VN blade steel, titanium handle, SpeedSafe® torsion bar assisted opening, and the most accessible price point in the ZT lineup. It delivers the ZT experience — USA titanium construction and premium steel — with the familiar SpeedSafe® deployment that most Kershaw owners already know.

    For buyers who want to go straight to the flagship the ZT 0562 in CPM-20CV titanium is the definitive answer — the most celebrated Zero Tolerance ever made and one of the finest production folders available at any price point in 2026.

    Who is Rick Hinderer and why does his collaboration matter? ﹢

    Rick Hinderer is an Ohio-based custom knifemaker, firefighter, and EMT whose XM-18 folding knife is one of the most sought-after production and custom knives ever made. Hinderer's custom work sells for $600–$1,200 per knife with significant waitlists. His collaboration with Zero Tolerance produced the ZT 0562 — a production knife that delivers the same fundamental XM-18 geometry, the same flipper tab deployment, and the same titanium framelock construction at a fraction of the custom price.

    For collectors who want Hinderer design DNA without the custom waitlist or the custom price — the ZT 0562 is the answer. It is not a simplified version of an XM-18. It is a production interpretation of Hinderer's design philosophy executed at the highest level Kai USA's Oregon facility can deliver.

    What is CPM-20CV steel and why does Zero Tolerance use it? ﹢

    CPM-20CV is a powder metallurgy stainless steel with approximately 20% chromium and 4% vanadium — one of the highest-performing stainless alloys available in production knives in 2026. Its combination of exceptional edge retention, outstanding corrosion resistance, and the ability to take and hold a mirror polish makes it the natural choice for a brand whose entire identity is built on uncompromising performance.

    Zero Tolerance heat treats CPM-20CV to Kai USA's precise Oregon protocol — a process developed and refined across decades of premium knife production that consistently extracts edge retention performance above what the alloy specification alone would suggest. On a ZT 0562 or ZT 0640, CPM-20CV delivers an edge that stays sharp through weeks of daily use and holds a working edge longer than virtually any other production folder steel at a comparable price point.

    What is the difference between the ZT 0562 and the ZT 0640? ﹢

    Both the ZT 0562 and ZT 0640 use CPM-20CV blade steel in titanium handles at similar price points — the difference is design philosophy and intended carry aesthetic.

    The ZT 0562 is Rick Hinderer's design — a 3.5" tanto blade with aggressive tactical geometry, a stonewashed titanium handle, and the unmistakable Hinderer flipper tab. It carries like a purpose-built tactical tool and makes no apologies for it.

    The ZT 0640 is Dmitry Sinkevich's design — a 3.4" drop point with clean European lines, a more refined handle geometry, and a slimmer carry profile that works equally well in a suit pocket and a field kit. Same steel, same Oregon manufacturing — completely different personality.

    Choose the 0562 if you want Hinderer DNA and tactical character. Choose the 0640 if you want refined European aesthetics and a more versatile carry profile. Both are among the finest production folders made anywhere in the world in 2026.

    Does Zero Tolerance offer a warranty? ﹢

    Yes — every Zero Tolerance knife is covered by Kai USA's limited lifetime warranty against defects in materials and workmanship for the original owner. The warranty covers manufacturing defects — it does not cover damage from misuse, disassembly, or normal wear.

    As an authorized Zero Tolerance dealer, Knifeworks supports the full warranty program on every ZT purchased from us. Contact our team directly for warranty assistance — we coordinate with Kai USA on your behalf for the fastest possible resolution. Zero Tolerance knives purchased from unauthorized gray market sources are not eligible for warranty service — another critical reason to buy from an authorized dealer like Knifeworks.

    What Zero Tolerance knives does Knifeworks carry? ﹢

    Knifeworks carries the full Zero Tolerance lineup as an authorized dealer — all sourced directly from Kai USA in Tualatin, Oregon and backed by the full ZT warranty:

    ZT 0562, ZT 0562CF, ZT 0640, ZT 0350, ZT 0392, ZT 0470, and the complete Zero Tolerance Rick Hinderer, Dmitry Sinkevich, and Les George collaboration catalog.

    Not sure which Zero Tolerance is right for your collection or carry style? Contact our team — we carry ZT knives and we are here to help you find the right one.

    Shop Zero Tolerance with Confidence at Knifeworks Every Zero Tolerance knife in our catalog is sourced directly from authorized Kai USA channels in Tualatin, Oregon — guaranteed genuine, USA-made without exception, and backed by a team that carries these knives. Rick Hinderer collaborations, Dmitry Sinkevich designs, CPM MagnaCut and CPM-20CV throughout — the complete Zero Tolerance lineup is here. Fast shipping. Expert support. Real knife people who know exactly what no-compromise means.