Maintenance and Inspection Procedures Manual
Type:
CT
Series:
CTLS
LSA
Page: 1-11
AF 04800001
Revision No. 3
Date: 14 Sep 2008
1.12 Recommended Fastener Torque Values and Bolts Installation
ATTENTION!
All bolts has to be mounted up to down, inside to outside or front to aft, unless explicitly stated
otherwise.
Bolt M5 DIN
912-8.8
Bolt M6 DIN
912-8.8
Bolt M8 DIN
912-8.8
Bolt M5 DIN
931 -8.8
Bolt M6 DIN
931 -8.8
Bolt M8 DIN
931 -8.8
Bolt
Bolt M5 DIN
933 – 8.8
Bolt M6 DIN
933 – 8.8
Bolt M8 DIN
933 – 8.8
Bolt M5
DIN
7991-8.8
(countersunk)
Bolt M6
DIN
7991-8.8
(countersunk)
Nut
Nut M5 DIN
985-8,8
Nut M6 DIN
985-8,8
Nut M8 DIN
985-8,8
Nut M5 DIN
985-8,8
Nut M6
DIN 985-
8,8
Recommended Torques
for class 8.8 (ISO 898)
fasteners
52 lb-in
5.9 N*m
89 lb-in
10 N*m
222 lb-in
25 N*m
52 lb-in
5.9 N*m
89 lb-in
10 N*m
For areas with thick
bonding seams (
cab-o-sil + resin +
hardener)
49 lb-in
5.5 N*m
80 lb-in
9 N*m
200 lb-in
22.5 N*m
40 lb-in
4.5 N*m
71 lb-in
8 N*m
Parts of PVC
49 lb-in
5.5 N*m
80 lb-in
9 N*m
200 lb-in
22.5 N*m
49 lb-in
5.5 N*m
80 lb-in
9 N*m
Carbon fabric composite
packages assemblies
49 lb-in
5.5 N*m
80 lb-in
9 N*m
200 lb-in
22.5 N*m
49 lb-in
5.5 N*m
80 lb-in
9 N*m
Plywood bonded into
composite
40 lb-in
4.5 N*m
71 lb-in
8 N*m
160 lb-in
18 N*m
31 lb-in
3.5 N*m
62 lb-in
7 N*m
Glass fiber composite
packages
49 lb-in
5.5 N*m
80 lb-in
9 N*m
200 lb-in
22.5 N*m
49 lb-in
5.5 N*m
80 lb-in
9 N*m
Metal parts assemblies
(steel, stainless steel,
aluminum alloys)
53 lb-in
6 N*m
89 lb-in
10 N*m
222 lb-in
25 N*m
53 lb-in
6 N*m
89 lb-in
10 N*m
As long as not stated otherwise within this manual, for bolts using standrad nuts, or botls otherwise
unsecured, Loctite must be applied. Middle strength loctite is to be used when bolts are mounted to
plastic components.
In all cases, used self locking nuts (with plastic locking ring) must be exchanged after new ones at any
time.
