Introducing the KATO Linear Torque Arm

KATO Linear Torque Arm

The World Smallest Tangless Inserts - 0-80

World's Smallest Tangless Inserts

KATO App Available Now for Download

KATO App

A Superior Locking Force

Coming Soon - LockOne

KATO Fastening Systems

The original inventor and manufacturer of the bi-directional Tangless® screw thread insert.

Tangless Inserts

Tangless CoilThread inserts are a helically-coiled, bi-directional, wire design; that install using a drive notch located at either end of the coil insert instead of a tang located at one end of the inserts.

KATO Tangless inserts are identical, in form, fit, and function to conventional tanged inserts (e.g.,CoilThread, Heli-Coil & Recoil). In fact,Tangless CoilThread inserts are identical to tanged inserts in every way except for their method of installation & removal. KATO Tangless inserts even have the same procurement specification (NASM8846 for unified sizes and MA1565 for metric sizes) as tanged inserts. KATO Tangless inserts eliminate tang break-off and retrieval, are easily adjusted after installation, and offer non-destructive removal. In addition, Heli-Coil and Recoil Tangless inserts are manufactured under license from KATO!

Learn More on Tangless inserts


KATO CoilThread Tanged inserts are a continuous, helically-coiled, wire design allowing installation using a segment of wire (tanged) centrally located at one end of the insert.

Learn More on CoilThread inserts

Tanged Inserts
KATO Products

KATO CoilThread Tools

High Quality, Precision Installation Tools, Removal Tools, and More!

KATO Products