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STANDARD SPECIFICATIONS
General Torque Specifications (rev. 4/97)
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 cap-screws 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 cap-screws. Use value in [ ] if using prevailing torque nuts.
UNC
SAE
SIZE
Grade 2
1/4-20
4
[5]
5/16-18
8
[10]
3/8-16
15
[19]
7/16-14
24
[30]
1/2-13
35
[43]
9/16-12
55
[62]
5/8-11
75
[94]
3/4-10
130
[162]
7/8-9
125
[156]
1-8
190
[237]
1-1/8-7
270
[337]
1-1/4-7
380
[475]
1-3/8-6
490
[612]
1-1/2-6
650
[812]
1-3/4-5
736
[920]
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
Newton
thread
Meters
diameter
(Standard
(mm)
Torque)
6
7
8
10
12
14
16
18
2-2
TABLE OF CONTENTS
SAE
SAE
Grade 5
Grade 8
6
[7]
9
13
[13]
18
23
[29]
35
35
[43]
55
55
[62]
80
80
[100]
110
110
[137]
170
200
[250]
280
320
[400]
460
480
[506]
680
600
[750]
960
840
[1050
1426
1010
[1375]
1780
1460
[1825]
2360
1651
[2063]
2678
Foot
Pounds
(Standard
Torque)
10
[14]
7
16
[22]
12
23
[32]
17
46
[60]
34
80
[125]
60
125
[155]
90
200
[240]
150
275
[330]
205
Table 2-1: General Torque Specifications
UNF
SIZE
Grade 2
[11]
1/4-28
[22]
5/16-24
9
[42]
3/8-24
17
[62]
7/16-20
27
[100]
1/2-20
40
[137]
9/16-18
60
[212]
5/8-18
85
[350]
3/4-16
150
[575]
7/8-14
140
[850]
1-14
210
[1200]
1-1/8-12
300
[1782]
1-1/4-12
420
[2225]
1-3/8-12
560
[2950]
1-1/2-12
730
[3347]
1-3/4-12
920
Nominal
Thread
Diameter
(mm)
[10]
20
[16]
24
[24]
27
[47]
30
[75]
33
[115]
36
[180]
39
[245]
---------------
SAE
SAE
Grade 5
5
[6]
7
[9]
[11]
14
[17]
[21]
25
[31]
[34]
40
[50]
[50]
65
[81]
[75]
90
[112]
[106]
130
[162]
[188]
220
[275]
[175]
360
[450]
[263]
540
[675]
[375]
660
[825]
[525]
920
[1150]
[700]
1260
[1575]
[912]
1640
[2050]
[1150]
2063
[2579]
Newton
Meters
(Standard
Torque)
385
[450]
670
[775]
980
[1105]
1330
[1470]
1790
[1950]
2325
[2515]
3010
[3210]
---------------
INDEX
SAE
Grade 8
10
[12]
20
[25]
35
[44]
60
[75]
90
[112]
130
[162]
180
[225]
320
[400]
500
[625]
760
[950]
1080
[1350]
1500
[1875]
2010
[2512]
2660
[3325]
3347
[4183]
Foot
Pounds
(Standard
Torque
290
[335]
500
[625]
730
[825]
990
[1090]
1340
[1450]
1730
[1870]
2240
[2380]
---------------
F-1154-2304
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