9K998-2306
5-1
Chapter 5
Maintenance
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 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
UNC
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]
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]
Summary of Contents for Brillion Turfmaker II Series
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