Here's where Tangless CoilThread Inserts stand out from all other helically-coiled threaded inserts. Instead of a tang, these new inserts feature a unique, ramped driving notch on the inside diameter of the first coil on each end of the insert.

To drive the insert we developed on innovative installation tool with a patented, internal spring loaded pawl located at the tip of the tool's mandrel. During installation this hooked pawl locks into the insert Driving Notch and rotates the insert into the tapped hole, The pawl then retracts onto the mandrel to allow the tool back out of the installed insert.

Installation Process

The installation Process is Simple

· Partially thread an insert onto the tools mandrel

· (No need to orient the insert..they're bi directional!)

· Align the insert with the tapped hole and press the trigger on the electric installation tools

That's it! everything else is automatic. The insert goes in, the tool comes out and the job is finished. The insert is ready for a bolt or screw.


Free Running, Self Locking & Strip Feed

Free Running

Produced from precision profiled austentic stainless steel wire wound into a helical spiral, resulting in a spring like appearance. When installed, using any one of a variety of manual or automatic tools, they provide strong permanent internal threads which resist head and corrosion.


Self Locking

Screw locking CoilThread inserts are of particular value in applications suject to the effects of cyclic vibration or impact. Self Locking is achieved by the action of one or more polygonal grip coils positioned within the insert's length,which exert radial pressure on the male thread. Each grip coil consists of a number of tangential locking chords which protrude inside the minor diameter of the normal free running coils. As the male thread passes through these grip coils, the locking flats are displaced thus exerting radial pressure or prevailing torque on he male thread.



Strip Feed

For even greater productivity during high volume production, KATO CoilThread screw head inserts can be supplied in reels of plastic tape known as Strip Feed Inserts. The inserts are held securely in the reels of plastic tape and neatly coiled into reels. Hence, the KATO CoilThread insert is positioned properly for installation each and every time, eliminating time spent on manual positioning of the inserts.



Materials


Type 304 Stainless Steel (18-8) (AS7245)

KATO Tanged & Tangless threaded Inserts are made of cold-rolled 304 stainless steel wire (AS7245), work-hardened to a tensile strength above 200,000 psi, and a hardness of Rc 43-50. The finished surface (8-16 micro-inches) is exceedingly smooth, virtually eliminating friction-induced thread erosion.

The stainless steel used resists corrosion under normal environmental conditions. Galvanic action within the thread assembly is reduced, further adding to the life of the fastening assembly. KATO Coil Thread inserts are used with temperatures from -320°F to +800°F (-195°C to +426.7°C).



Finishes & Coatings


Silver Plating

Primarily used to reduce the effects of galling (seizure) of screw threads in high temperature service applications. Silver plating is the most commonly used coating for aero-engine fasteners providing an even degree of lubrication up to a maximum service temperature of about 650°C.

Cadmium Plating

Cadmium Plated CoilThread Inserts provide an excellent barrier between dissimilar metals dramatically reducing the effects of galvanic corrosion. Its high lubricity and excellent corrosion resistance prevents seizure and galling.

Dry Film Lubricants

Used for mildly corrosive or high temperature applications, dry film lubricants comprise of suspensions of small particles of solid lubricants such as molybdenum disulphide (MoS2) or PTFE. Can be formulated to suit most industrial applications to service temperatures around 315°C.

Coloured Dye

Inserts can be dyed in a variety of colours depending on the customers requirements. Dye is often used so the insert can clearly be seen in the hole.