RECOMMENDED
NUT
TORQUES
THE
TORQUE VALUES
STATED
ARE
POUND-INCHES,
RELATED
ONLY
TO
STEEL
NUTS ON
OIL-FREE
CADMIUM
PLATED
THREADS.
FINE
THREAD
SERIES
TENSION
SHEAR
TAP
SIZE
TORQUE
TORQUE
STD
ALT
STD
ALT
(NOTE 1)
(NarE
2)
(NarE
3)
(NOTE
2)
8-36
12-15
7-9
10-32
20-25
20-28
12-15
12-19
1/4-28
50-70
50-75
30-40
30-48
5/16-24
100-140
100-150
60-85
60-106
3/8-24
160-190
160-260
95-110
95-170
7/16-20
450-500
450-560
270-300
270-390
1/2-20
480-690
480-730
290-410
290-500
9/16-18
800-1000
800-1070
480-600'
480-750
5/8-18
1100-1300
1100-1600
660-780
660-1060
3/4-16
2300-2500
2300-3350
1300-1500
1300-2200
7/8-14
2500-3000
2500-4650
1500-1800
1500-2900
1-14
3700-5500
3700-6650
2200-3300
2200-4400
1-1/8-12
5000-7000
5000-10000
3000-4200
3000-6300
1-1/4-12
9000-11000
9000-16700
5400-6600
5400-10000
COARSE
THREAD
SERIES
(NarE
4)
(NarE
5)
8-32
12-15
7-9
10-24
20-25
12-15
1/4-20
40-50
25-30
5/16-18
80-90
48-55
3/8-16
160-185
95-100
7/16-14
235-255
140-155
1/2-13
400-480
240-290
9/16-12
500-700
300-420
5/8-11
700-900
420-540
3/4-10
1150-1600
700-950
7/8-9
2200-3000
1300-1800
1-8
3700-5000
2200-3000
1-1/8-8
5500-6500
3300-4000
1-1/4-8
6500-8000
4000-5000
NOTES
1.
Covers
AN310, AN315, AN345, AN363, MS20365, MS21042, MS21044, MS21045
and
MS21046.
2.
When
using
AN310
or
AN320
castellated
nuts
where
alignment
between
the
bolt
and
cotter
pin
slots
is
not
reached
using
normal
torque
values,
use
alternate
torque
values
or
replace
the
nut.
3.
Covers
AN316, AN320, MS20364
and
MS21245.
4.
Covers
AN363, MS20365, MS21042, MS21043, MS21044, MS21045
and
MS21046.
5.
Covers
AN340.
I~~~J)~N\
DO NOT REUSE
SELF-LOCKING
NUTS.
The
above
values
are
recommended
for
all
installation
procedures
contained
in
this
manual,
except
where
other
values
are
stipulated.
They
are
not
to
be
used
for
checking
tightness
of
installed
parts
during
service.
Figure
1-4.
Torque
Values
1-4
Change
3
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