
NAS & MS Inserts from KATO
Need Wire Thread Inserts That Meet Military & Aerospace Standards?
Look no further than KATO!
KATO offers a large variety of wire thread inserts that meet Military Standard (MS) and National Aerospace Standard (NAS) specifications. Often referred to as heli-coil (helicoil) or helical inserts, wire thread inserts are formed from coiled wire and provide a cost effective solution for increasing thread strength or repairing damaged threads. KATO manufacturers both tanged and tangless inserts available in free-running (non-locking) and locking configurations.
Product Spotlight: KATO KPH Prewinder Tools
KATO’s prewinder hand tools are designed to install tangless and tanged threaded inserts and are hand operated making them suitable for small production runs. Whether you’re using threaded inserts to repair threads or strengthen parent material prewinder tools are a must for installation.

Product Spotlight: KATO Linear Torque Arm
Introducing the Linear Torque Arm
KATO Fastening Systems recently announced the launch of the all new KATO Linear Torque Arm. The linear torque arm is designed to install tangless or tanged threaded inserts using any KATO electric driver or air tool (with optional air tool kit). The Linear Torque Arm offers an unprecedented smoothness of linear and rotational movements as it absorbs the torque reaction inherent with power installation tools.
Features & Benefits
- Keeps the installation tool perpendicular to the work surface
- Reduces RMI (Repetitive Motion Injury) and CTS (Carpal Tunnel Syndrome) while boosting production
- Prevents cross threading and side load, prolonging the life of installation mandrels
- Maneuvers smoothly as the arm absorbs torque reactions from electric and pneumatic tools
- Torque capacity of 177 in-lbf (20 Nm)
- And more…
the KATO Linear Torque Arm is fully compatible with KATO strip-feed packaged tangless inserts, and KATO prewinder electric tools (2KPE series).
Click to learn more about KATO Linear Torque Arm

Manufacturer Profile: KATO
KATO: Manufacturer of Tangless Inserts
KATO Fastening Systems is a leading manufacturer of threaded inserts known for their invention of the bi-directional tangless threaded insert. Founded in 1997, KATO provides a full line of tanged and tangless inserts, insert tools, hinges, and thread repair kits. KATO manufactures equivalent inserts to HeliCoil and Recoil and can often provide cost savings and shorter lead times compared to their competitors. KATO also produces inserts certified to military specifications.
KATO Mil-Spec Insert Series
- NAS1130
- MS122
- MS124
- MS21209C
- MS21209F
Advantages of KATO Tangless Inserts
Tangless inserts have the same fit, form, and function as tanged inserts but with a couple key advantages. One, tangless inserts reduce the possibility of Foreign Object Debris (FOD) from loose tangs which can cause damage to machinery. This translates into reduced costs for maintenance and repair. Two, tangless inserts are bi-directional which means that no orientation is required when installing inserts. This can speed up assembly providing additional cost savings.
bisco industries – Authorized KATO Distributor
bisco industries is proud to be an authorized KATO Distributor. bisco stocks 1000s of KATO parts and offers online pricing and availability as well as production information. To find KATO stock visit biscoind.com today!

Replacing Metal with Plastic? Here’s a Solution for Weaker Threads
Maintaining Thread Strength in Plastic Parent Material
Today, manufacturers and design engineers are looking for alternative ways to decrease the cost, weight, and size of their parts. As a result, more and more companies are turning to plastic to replace heavier and more costly metal materials. Using plastic not only reduces the weight, but can also lower cost, and provide design flexibility. In fact plastic components manufactured using injection molding can be produced in a fraction of the time it takes to machine the same component from metal.
There are many pros and cons to using plastic as an alternative to metal, however one major drawback is weaker thread strength. This issue can be resolved with a product bisco industires is a franchised distributor for – KATO Tangless® CoilThread® inserts.
KATO CoilThread inserts are a helically-coiled fastener that can provide permanent, wear-resistant screw threads that exceed the strength of plastic parent materials. While made of metal, KATO CoilThread inserts weigh less and require the smallest boss diameter (minimum required material thickness around the insert) for a given size when compared to solid/brass inserts. KATO CoilThread inserts can be installed in any plastic material that can be tapped.
Bonus! Additional Cost Savings
KATO Tangless inserts have a drive notch at each end which eliminates the need for orientation thereby reducing overall installation time. In addition, KATO Tangless CoilThread inserts usually cost less than solid inserts! That means, you can reduce costs both by switching to plastic components and by securing them with KATO Tangless® CoilThread inserts. In fact, customer studies show that using KATO Tangless inserts can save from $0.15 – $0.50 per hole in labor costs.
Already working with plastic materials? bisco carries a large selection of tangless inserts and tools. Visit biscoind.com for more info on all KATO products!