MAINTENANCE MANUAL
SAVANNAH S
Doc. No.:
MM-SVNH-EN
Revision:
07
Rev. Date:
07/11/2022
Proj. Ref.:
SVNH S
A/C:
Savannah S
Applies to Generic Serial Number:
yy-mm-54-xxxx
Page:
21/132
DOC
FMM00
Table 6: Cotter pin coupling with castle nut
1.14.3. Threaded fasteners
The fasteners must be adequate to the hole, not ovalized, and depth of the structure and or not
vibrating. The head of bolt must be set in contact to the structure and closed with a nut at proper
torque, depending on the application (see
) and size. The thickness of the connection must
be lower than the bolt length, plus minimum one washer on the nut side and minimum two free thread
pitches over the nut end. If the bolt is longer than required, add required number of washers to
respect the correct installation. The fasteners is normally closed by holding the head of the bolt and
rotating the nut only; in few cases the closing procedure is inverted, by rotating the bolt, for space
reasons only.
Replace the bolt with a new one when it is damaged or consumed in any parts. Replace always the
stop nut when removed and eventually the bolt. Replace also the stop nut when it is older than 20
years.