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TORQUE SPECIFICATIONS FOR
STANDARD MACHINE HARDWARE
TOLERANCE
+200/o
SIZE
8-32
8-36
lo-24
lo-32
l/4-20
l/4-28
5116-18
5116-24
318-16
318-24
7116-14
7116-20
l/2-13
112-20
9116-12
9116-18
518-11
518-18
314-10
3/4-16
718-g
718-14
1-8
1-12
SAE GRADE #2 SAE GRADE
A15
SAE
GRADE
#8
0
Q
8.
InJLbs.
In./Lbs.
InAbs.
Ft.lLbs.
Nm.
Ft./Lb.s.
Nm.
Ft.Rbs.
Nm.
19
2.1
30 3.4 41 4.6
20
2.3
31 3.5
43 4.9
27
3.1
43 4.9
60 6.8
31 3.5
49 5.5
68 7.7
--
66
7.6
8 10.9
12
16.3
76
8.6
10 13.6
14 19.
11
15.
17 23.1 25 34.
12
16.3
19 25.8
25 34.
,,
,20
27.2
30 40.8 45 61.2
'23
31.3
35 47.6
50 68.
30
40.8
50
.68.
'
70 95.2
35
47.6
55 74.8 80 108.8
50
68.
75 102. 110 149.6
i
55
74.8
90 122.4
120 163.2
65
83.4
110 149.8
150' 204.
75
102.,
120 163.2
170 231.2
90
122.4
150 204. 220 299.2
100
136.
180 244.8 240 326.4
,
160
217.6
260 353.6 386 525.
180
244.8
300 408. 420 571.2
140
190.4
400 544. 600 816.
155
210.8
440 598.4 660 897.6
220
299.2
580 788.8
900 1,224.
240
326.4
640 870.4
1,000 1,360.
NOTE:
1. These torque values are to be used for all hardware
excluding: locknuts, self-tapping screws, thread
forming screws, sheet metal screws and socket head
setscrews.
2. Recommended seating torque values for locknuts:
a. For prevailing torque locknuts
-
use 65% of grade 5
torques.
b. For flange whizlock nuts (and screws)
-
usa
135%
of grade,5 torques.
3. Unless otherwise noted
on assembly drawings all
torque values must meet this specification.
BOLTHEADMARKING
S.A.E.GRADE:
20