Technical data

13773-001
20-60
Page 530 Nov 2000
The required torque values are shown for fasteners used on this airplane. Make sure that the needed torque
value is selected from the correct table.
NON-COMPOSITE STRUCTURE
Torque Specifications for High Strength Steel Tension Nuts and Bolts with FINE Threads
Item
Thread
Size
Inch Pounds Nm
Minimum Dry
Torque
Maximum Dry
Torque
Minimum Dry
Torque
Maximum
Dry Torque
STEEL TENSION NUTS
AN310
AN315
AN363
AN365
MS17825
MS20365
MS21045
NAS1021
NAS679
NAS1291
STEEL TENSION BOLTS
MS20004 thru MS20024
NAS144 thru NAS158
NAS333 thru NAS340
NAS583 thru NAS590
NAS624 thru NAS644
NAS1303 thru NAS1320
NAS6603 thru 6620
NAS172
NAS174
NAS517
10-32 25 30 2.8 3.3
1/4”-28 80 100 8.8 11.0
5/16”-24 120 145 13.2 16.0
3/8”-24 200 250 22.0 27.5
7/16”-20 520 630 57.2 69.3
1/2”-20 770 950 84.7 104.5
9/16”-18 1,100 1,300 121.0 143.0
5/8”-18 1,250 1,550 137.5 170.5
3/4”-16 2,650 3,200 291.5 352.0
7/8”-14 3,550 4,350 390.5 478.5
1”-14 4,500 5,500 495.0 605.0
1-1/8”-12 6,000 7,300 660.0 803.0
1-1/4”-12 11,000 13,400 1210.0 1474.0