Patriot equipment Corn Reel Installation & Operation Manual page 14

Torque Data for Standard Nuts, Bolts, and Capscrews
Tighten all bolts to torques specified in chart unless otherwise noted. Check tightness of bolts periodically,
using bolt chart as guide. Replace hardware with some grade bolt.
Note: Unless otherwise specified, high-strength Grade 5 hex bolts are used throughout assembly of equipment.
Bolt Torque for Standard Bolts
Grade 2
Bolt Size A lb-ft (N.m)
1/4" 6
5/16" 10
3/8" 20
7/16" 30
1/2" 45
9/16" 70
5/8" 95
3/4" 165
7/8" 170
1" 225
Bolt Torque for Metric Bolts
Class 8.8
Bolt Size A lb-ft (N.m)
6 9
7 15
8 23
10 45
12 78
14 125
16 194
18 268
20 378
22 516
24 654
Grade or Class value for bolts and capscrews are identified by their head markings.
Grade 5
lb-ft (N.m)
8 9 12
13 18 25
27 30 40
40 50 70
60 75 100
95 115 155
130 150 200
225 290 390
230 420 570
300 630 850
Class 9.8
lb-ft (N.m)
13 10 14
21 18 24
31 25 34
61 50 68
106 88 118
169 140 189
263 216 293
363 .. ..
513 .. ..
699 .. ..
886 .. ..
Corn Reel V2.0
Grade 8
lb-ft (N.m)
12 16
25 35
45 60
80 110
115 155
165 220
225 300
Torque figures indicated
Torque figures indicated
400 540 are valid for non-greased
are valid for non-greased
or non-oiled threads and
650 880 or non-oiled threads and
heads unless otherwise
heads unless otherwise
970 1310
specified. Therefore, do
specified. Therefore, do
not grease or oil bolts or
not grease or oil bolts or
capscrews unless
capscrews unless
Class 10.9
otherwise specified in this
otherwise specified in this
lb-ft (N.m)
manual. When using
manual. When using
13 17
locking elements, increase
locking elements, increase
21 29
torque values by 5%.
torque values by 5%.
31 42
61 83
106 144
170 230
263 357
364 493
515 689
702 952
890 1206
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