8 Fold Assist Great Plains Manufacturing, Inc.
586-543M 03/06/2013
Torque Values Chart
Gang Bolt Torque 1 3/4”-5 850 Foot-pounds (165 lbs on 5’ cheater).
Rolling Harrow Spike Bolt 1 1/2”-6 650-750 Foot-pounds (175 lbs on 4’ cheater).
Wheel Bolt Torque Values 1/2”-20 (75-85 ft-lbs) 9/16”-18 (80-90 ft-lbs) 5/8”-18 (85-100 ft-lbs).
946
25199m
Bolt
Size
Bolt Head Identification
Bolt
Size
Bolt Head Identification
Grade 2 Grade 5 Grade 8 Class 5.8 Class 8.8 Class 10.9
in-tpi
a
N-m
b
N-m N-m
mm x pitch
c
N-m N-m N-m
1
⁄
4
-20
7.4 11 16
M 5 X 0.8
1
⁄
4
-28
8.5 13 18
M 6 X 1
71115
5
⁄
16
-18
15 24 33
M 8 X 1.25
17 26 36
5
⁄
16
-24
17 26 37
M 8 X 1
18 2839
3
⁄
8
-16
27 42 59
M10 X 1.5
33 52 72
3
⁄
8
-24
314767
M10 X 0.75
396185
7
⁄
16
-14
43 67 95
M12 X 1.75
58 91 125
7
⁄
16
-20
49 75 105
M12 X 1.5
60 95 130
1
⁄
2
-13
66 105 145
M12 X 1
90 105 145
1
⁄
2
-20
75 115 165
M14 X 2
92 145 200
9
⁄
16
-12
95 150 210
M14 X 1.5
99 155 215
9
⁄
16
-18
105 165 235
M16 X 2
145 225 315
5
⁄
8
-11
130 205 285
M16 X 1.5
155 240 335
5
⁄
8
-18
150 230 325
M18 X 2.5
195 310 405
3
⁄
4
-10
235 360 510
M18 X 1.5
220 350 485
3
⁄
4
-16
260 405 570
M20 X 2.5
280 440 610
7
⁄
8
-9
225 585 820
M20 X 1.5
310 650 900
7
⁄
8
-14
250 640 905
M24 X 3
480 760 1050
1-8
340 875 1230
M24 X 2
525 830 1150
1-12
370 955 1350
M30 X 3.5
960 1510 2100
1
1
⁄
8
-7
4801080 1750
M30 X 2
1060 16802320
1
1
⁄
8
-12
540 1210 1960
M36 X 3.5
1730 2650 3660
1
1
⁄
4
-7
680 1520 2460
M36 X 2
1880 2960 4100
1
1
⁄
4
-12
750 16802730
1
3
⁄
8
-6
890 1990 3230
a. in-tpi = nominal thread diameter in inches-threads per inch
1
3
⁄
8
-12
1010 2270 3680
b. N· m = newton-meters
1
1
⁄
2
-6
1180 2640 4290
1
1
⁄
2
-12
1330 2970 4820
c. mm x pitch = nominal thread diameter in mm x threadpitch
To r que tolerance + 0%, -15% of torquing values. Unless otherwise specified use torque values listed above.
5.88.8 10.9
25199
ft-lb
d
ft-lb ft-lb ft-lb ft-lb ft-lb
5.6 8 12
61014 5 8 11
11 17 25 12 19 27
13 19 27 13 21 29
20 3144 243953
22 3549 294562
324970 426793
365578 44 70 97
49 76 105 66 77 105
55 85 120 68 105 150
70 110 155 73 115 160
79 120 170 105 165 230
97 150 210 115 180 245
110 170 240 145 230 300
170 265 375 165 260 355
190 295 420 205 325 450
165 430 605 230480 665
185 475 670 355 560 780
250 645 910 390 610 845
275 705 995 705 1120 1550
355 795 1290 785 1240 1710
395 890 1440 1270 1950 2700
500 1120 1820 1380 2190 3220
555 1240 2010
655 1470 2380
745 1670 2710
870 1950 3160
d. ft-l
b = foot pounds
980 2190 3560
3 57
(4 pages)
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