General Torque Specifications (Rev. 4/97) - Landoll 5211 Operator's Manual

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
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 Foot Pounds
(Standard
Torque)
385 [450]
670 [775]
980 [1105]
1330 [1470]
1790 [1950]
2325 [2515]
3010 [3210]
---------------
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]
(Standard
Torque
290 [335]
500 [625]
730 [825]
990 [1090]
1340 [1450]
1730 [1870]
2240 [2380]
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