Lighter, Stronger, Safer. A New Era of Locknut Performance.

Introducing KATO Fast®, the lightweight, ultra-strong, ultra-durable aluminium locknut designed to replace traditional crimp-locking steel nuts with an integrated wire-thread system.

Technical Data Sheet coming soon.

40 % Reduction in weight

233 % Longer lifespan

Stop compromising on fastener performance.

The problem with Traditional Locknuts

Traditional steel locknuts rely on physical distortion, known as “crimping”, to provide locking torque. This concentrates stress at specific locations increasing the risk of Failure and Foreign Object Debris (FOD) from nut fractures and limiting reusability.

A Step Change in Locknut Performance

KATO Fast® delivers a 40% reduction in weight, passes 50-plus cycles on a torque test (with the same bolt) improves environmental and safety performance and provides unmatched vibration resistance for the next generation of fasteners.

Reengineered from the Inside Out

With KATO Fast®, KATO Advanex has completely reengineered the locknut from the inside out. By integrating patented Advanex® Tangless® or LockOne® wire thread technology into a lightweight aluminium nut body, we provide engineers with a lightweight locking mechanism that is more durable and mechanically superior.

An Engineered Mechanical Advantage

Significant Mass Reduction

KATO Fast® saves up to 40% mass per unit compared to conventional steel locknuts, which allows for platform-wide lightweighting improvements without sacrificing structural integrity or rigidity. It is designed to replace high-volume MS/NAS nuts present in many existing designs.
Advanced Load Distribution & Tensile Performance

Conventional nuts concentrate stress on the first 1-2 threads. KATO Fast® integrated inserts distribute load forces across the entire thread length to reduce local stress concentration and mitigate the risk of crack initiation in critical joints. Our high-strength aluminium exceeds NASM25027 tensile requirements.
233% Longer Lifespan

While NASM25027 specifies performance for 15 installation and removal cycles, KATO Fast® maintains consistent prevailing torque for over 50 cycles. This allows manufacturers to reduce maintenance overhead and lower total cost of ownership over equipment lifespans.
Superior Vibration Resistance

Tested to Junker (ISO-16130) and NASM1312-7 standards, KATO Fast® prevents loosening under extreme cyclic loading and other causes of vibration. Our locknut fasteners provide engineers with a more predictable, repeatable torque profile than any existing crimped nut alternative.

Technical Comparison vs. Standard Locknuts

Locking Mechanism

Weight

Fatigue Life

Reusability

FOD & Safety

Hydrogen Embrittlement

Installation Tooling

Traditional Steel Locknuts

Locking Mechanism Nut body distortion caused by crimping
Weight Baseline (100%)
Fatigue Life Limited by stress concentration on first 1-2 threads
Reusability Baseline (15 cycles)
FOD & Safety Uses additional locking wire or cotter pin to provide stronger mechanical lock
Hydrogen Embrittlement Risk present in beam and/or/crimp areas
Installation Tooling Standard sockets

Locking Mechanism Integrated wire thread insert (Tangless® / LockOne®)
Weight Up to 40% lighter
Fatigue Life Enhanced via uniform load distribution across entire thread length
Reusability 50+ Cycles
FOD & Safety No requirement for additional locking eliminates FOD caused by wire and pins & improves operator safety
Hydrogen Embrittlement Zero risk thanks to no-crimp design
Installation Tooling Standard sockets (direct drop-in)

A New Era of Locknut Performance.

A “Drop-In” solution for complex supply chains.

Adopting KATO Fast® does not require any system- or product-level redesign. Our fasteners are engineered to match existing MS/NAS dimensions and are also suitable for established wrench/socket interfaces.

Rapid Availability

Typical industry lead times can stretch to over 100 weeks for standard fasteners. KATO Fast® is available for manufacture and delivery on a 12-14 week lead time.

Lower FOD Risk

KATO Fast® eliminates FOD from crimp fracture, locking wire and cotter pins, and reduces the risk of hydrogen-induced cracking associated with high-stress deformation zones.

Environmental Resilience

KATO Fast®’s integrated insert acts as a natural barrier to dissimilar metal corrosion, reducing industry reliance on hazardous cadmium or silver platings. Insert material can be varied to provide different levels of performance.

Engineered for the most demanding environments

KATO Fast® is validated against the world’s most stringent mechanical performance benchmarks, ensuring reliability across all industrial applications:

Vibration Integrity

Proven to maintain preload under extreme cyclic loading via ISO 16130 (Junker Test) and NASM1312-7 standards.

Tensile & Torque Strength

Meets and exceeds NASM25027 (Tables I & II) for prevailing torque and tensile strength.

Interoperability

Fully compatible with MS21042 dimensional standards, allowing for seamless integration into existing global supply chains and toolsets.

Improve your locknut performance with KATO Fast® today.

Request Engineering Consultation