TORQUE SPECIFICATIONS FOR
STANDARD MACHINE HARDWARE
TOLERANCE +20%
SIZE
8-32
8-36
1
O-24
1 O-32
I/4-20
l/4-28
5/i 6-l 8
5/l 6-24
318-l 6
318-24
7116-14
7/l
6-20
l/2-13
I/2-20
9116-l 2
9/l
6-18
518-l
1
518-l
8
314-l
0
314-l 6
718-9
718-l 4
1-8
l-12
SAE GRADE #2 SAE GRADE #5 SAE GRADE
#S
0
Q
8
In./Lbs. In./Lbs. InJLbs.
FtJLbs.
Nm.
Ft./Lbs.
Nm.
Ft./Lbs.
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
55 74.8 90 122.4 120 163.2
65 88.4 110’ 149.6 150 204.
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
..I.-
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:
BOLT HEAD MARKING
S.A.E. GRADE:
1. These torque values are to be used for all hardware
excluding: locknuts, self-tapping screws, thread
forming screw., sheet metal screws and socket head
setscrews.
20
2. Recommended seating torqwvalues for locknuts:
a. For prevailing torque locknuts
-
use 65% of arede 5
torqbes.
-
b. For flange whiilock
huts
(and screws)
-
use 135%
of wade 5
toraues.
3. Unle&
other&
noted on assembly drawings all
torque values must meet this specification.