Genuine Aircraft Hardware Co.
Helical Wire Inserts
General Purpose
Helical Coil Wire Inserts are available in locking and non locking. They are also available in different
lengths in increments of one half the major thread diameter of the design thread size. Many of the
MS21208 and MS21209 part numbers have been superseded by later and more confusing part numbers,
so please order using these numbers and we will notify you if supersedure is applicable, based on our
inventory and the availability of the various applicable part numbers.
To select a part number
use the prefix
MS21208 for non locking
MS21209 for locking
then use the column on
the left to find the thread
size for the fastener that
will be installed in the
insert during final
assembly.
The suffix will be found
on the same row as the
thread size under the
desired length of the
insert. This is an
installed length.
Example of part #
MS21209F410*
Locking Helical Coiled
Wire Insert, for 1/4-28
threads, .250” installed
length or 1x diameter.
*Drylube or plating is
available if required.
*Add an (L) for drylube or a (P) for plated to
end.
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Documents in this book for REFERENCE ONLY, not intended for design. Not guaranteed for accuracy.
All original Text, Tables and Drawings are Copyright © by Genuine Aircraft Hardware Co. 2004