
TABLE II-II. RECOMMENDED NUT TORQUES (cont)
TABLE B
* APPLICABLE TO COARSE THREADS ONLY
BOLTS
Steel Tension
AN 3 thru AN 20
AN 42 thru AN 49
AN 73 thru AN 81
AN 173 thru AN 186
MS 20033 thru MS 20046
MS 20073
MS 20074
AN 509 NK9
MS 24694
AN 525 NK525
MS 27039
NUTS
Steel Tension
Steel Shear
AN 310
AN 320
AN 315
AN 364
AN 363
NAS 1022
AN 365
MS 17826
NAS 1021
MS 20364
MS 17825
MS 21045
MS 20365
MS 20500
NAS 679
COURSE THREAD SERIES
NUT-BOLT
TORQUE LIMITS
TORQUE LIMITS
SIZE
IN-LBS
IN-LBS
MIN.
MAX.
MIN.
MAX.
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
110
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
1,150
1,600
700
950
7/8-9
2,200
3,000
1,300
1,800
1-8
3,700
5,000
2,200
3,000
1-1/8-8
5,500
6,500
3,300
4,000
1-1/4-8
6,500
8,000
4,000
5,000
BOLT FRICTION DRAG
SIZE TORQUE (IN LBS)
15
10
18
1/4
30
5/16
60
3/8
80
7/16
100
PIPER AIRCRAFT
PA-28-161 CADET
AIRPLANE MAINTENANCE MANUAL
Issued: FEBRUARY 28, 1989
HANDLING AND SERV I C I N G
1B5