RotorWay International
Exec 162F Construction Manual
Section 1
Page 3
H. The bolt “grip length” is the unthreaded portion of the bolt shank and should always be correct. Normally the grip
length is equal the thickness of the objects being bolted together, though bolts of slightly longer length can be used
with washers.
I. Washers should be used under bolt heads and nuts unless otherwise specified. A washer guards against mechanical
damage to the material and can also help prevent corrosion.
J. When installing a rod end, hold it so that it does not rotate when the jam nut is being tightened. The rod end should be
able to pivot an equal distance in both directions, instead of being cocked to one side, with the nut tight.
K. When tightening the nuts on the ends of control cables, the threaded rod (arrow) must be held to prevent the inner
cable from twisting inside the housing. Twisting may damage the cable and cause it to break.
L. Always use steel rivets (instead of aluminum) in areas where strength is critical, such as tail boom and tail rotor
components. Aluminum pop rivets are not structural and should only be used in low-stress areas, for example holding
nut plates. Correct grip length of the rivets is determined by the thickness of the materials being fastened.
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