

Heli-Coil manufactures various designs of hand installation tools.
Generally, finer pitch inserts are proportionately larger in the free state than coarse pitch inserts and therfore have to be “pre-wound” to a smaller diameter for installation.
Large coarse pitch inserts (and 2-56, 3-48, and M2.2 inserts) need only a threaded mandrel tool for installation.
TYPE I |
TYPE II |
|
Threaded Mandrel
|
Prewinder
|
TYPE III |
TYPE IV |
|
Threaded Mandrel
|
Non-Captive Prewinder
|



