STANDARD SPECIFICATIONS
2-3
General Torque Specifications
(rev. 4/97)
Table 2-1: General Torque Specifications
TORQUE SPECIFIED IN FOOT POUNDS -
This chart provides tightening torques for general purpose applications when
special torques are not specified on process or drawing. Assembly torques apply to plated nuts and capscrews assembled without
supplemental lubrication (as received condition). They do not apply if special graphite moly-disulfide or other extreme pressure
lubricants are used. When fasteners are dry (solvent cleaned) add 33% to as received condition torque. Bolt head identification
marks indicate grade and may vary from manufacturer to manufacturer. Thick nuts must be used on grade 8 capscrews. Use value
in [ ] if using prevailing torque nuts.
UNC
SIZE
SAE Grade
2
SAE Grade
5
SAE Grade
8
UNF
SIZE
SAE Grade
2
SAE Grade
5
SAE Grade
8
1/4-20
4 [5]
6 [7]
9 [11]
1/4-28
5 [6]
7 [9]
10 [12]
5/16-18
8 [10]
13 [13]
18 [22]
5/16-24
9 [11]
14 [17]
20 [25]
3/8-16
15 [19]
23 [29]
35 [42]
3/8-24
17 [21]
25 [31]
35 [44]
7/16-14
24 [30]
35 [43]
55 [62]
7/16-20
27 [34]
40 [50]
60 [75]
1/2-13
35 [43]
55 [62]
80 [100]
1/2-20
40 [50]
65 [81]
90 [112]
9/16-12
55 [62]
80 [100]
110 [137]
9/16-18
60 [75]
90 [112]
130 [162]
5/8-11
75 [94]
110 [137]
170 [212]
5/8-18
85 [106]
130 [162]
180 [225]
3/4/10
130 [162]
200 [250]
280 [350]
3/4-16
150 [188]
220 [275]
320 [400]
7/8-9
125 [156]
320 [400]
460 [575]
7/8-14
140 [175]
360 [450]
500 [625]
1-8
190 [237]
408 [506]
680 [850]
1-14
210 [263]
540 [675]
760 [950]
1-1/8-7
270 [337]
600 [750]
960 [1200]
1-1/8-12
300 [375]
660 [825]
1080 [1350]
1-1/4-7
380 [475]
840 [1050]
1426 [1782]
1-1/4-12
420 [525]
920 [1150]
1500 [1875]
1-3/8-6
490 [612]
1010 [1375]
1780 [2225]
1-3/8-12
560 [700]
1260 [1575]
2010 [2512]
1-1/2-6
650 [812]
1460 [1825]
2360 [2950]
1-1/2-12
730 [912]
1640 [2050]
2660 [3325]
1-3/4-5
736 [920]
1651 [2063]
2678 [3347]
1-3/4-12
920 [1150]
2063 [2579]
3347 [4183]
METRIC:
Coarse thread metric class 10.9 fasteners and class 10.0 nuts and through hardened flat washers, phosphate coated, Rockwell “C”
38-45. Use value in [ ] if using prevailing torque nuts.
Nominal
thread
diameter (mm)
Newton Meters
(Standard
Torque)
Foot Pounds
(Standard
Torque)
Nominal
Thread
Diameter (mm)
Newton Meters
(Standard
Torque)
Foot Pounds
(Standard
Torque
6
10 [14]
7 [10]
20
385 [450]
290 [335]
7
16 [22]
12 [16]
24
670 [775]
500 [625]
8
23 [32]
17 [24]
27
980 [1105]
730 [825]
10
46 [60]
34 [47]
30
1330 [1470]
990 [1090]
12
80 [125]
60 [75]
33
1790 [1950]
1340 [1450]
14
125 [155]
90 [115]
36
2325 [2515]
1730 [1870]
16
200 [240]
150 [180]
39
3010 [3210]
2240 [2380]
18
275 [330]
205 [245]
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Summary of Contents for LT10A Series
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Page 16: ...3 6 F 876 1217 Edition OPERATING INSTRUCTIONS Table provided for general use NOTES...
Page 24: ...4 8 F 876 1217 Edition MAINTENANCE AND LUBRICATION Page Intentionally Blank...
Page 34: ...5 10 F 876 1217 Edition TROUBLESHOOTING GUIDE Table provided for general use NOTES...
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