MacDon M105 - Recommended Torques; General; Sae Bolts

GENERAL
169558 Revision D
5
RECOMMENDED TORQUES
A. GENERAL
The tables shown below give correct torque
values for various bolts and capscrews.
• Tighten all bolts to the torques specified in
chart (unless otherwise noted throughout
this manual).
• Check tightness of bolts periodically, using
bolt torque chart as a guide.
• Replace hardware with the same strength
bolt.
• Torque figures are valid for non-greased or
non-oiled threads and heads unless
otherwise specified. Do NOT grease or oil
bolts or capscrews unless specified in this
manual.
• Torque categories for bolts and capscrews
are identified by their head markings.
B. SAE BOLTS
SAE Grade 5 Bolt and Grade 5 Free Spinning
Nut
Nominal
Size
Torque (ft·lbf)
(*in·lbf)
Torque (N·m)
Min. Max. Min. Max.
1/4-20 *106 *117 11.9 13.2
5/16-18 *218 *241 24.6
27.1
3/8-16 32 36 44
48
7/16-14 52 57 70 77
1/2-13 79 87 106 118
9/16-12 114 126 153 170
5/8-11 157 173 212 234
3/4-10
281 311
380 420
7/8-9 449 496 606 669
1-8 611 676 825 912
SAE Grade 5 Bolt and Grade 5 Distorted
Thread Nut
Nominal
Size
Torque (ft·lbf)
(*in·lbf)
Torque (N·m)
Min. Max. Min. Max.
1/4-20 *72 *80 8.1 9.0
5/16-18 *149 *164 16.7
18.5
3/8-16 22 24 30
33
7/16-14 35 39 48 53
1/2-13 54 59 73 80
9/16-12 77 86 105 116
5/8-11 107 118 144 160
3/4-10
192 212
259 286
7/8-9 306 338 413 456
1-8 459 507 619 684
SAE Grade 8 Bolt and Grade 8 Free Spinning
Nut
Nominal
Size
Torque (ft·lbf)
(*in·lbf)
Torque (N·m)
Min. Max. Min. Max.
1/4-20 *150 *165 16.8 18.6
5/16-18 26 28 35
38
3/8-16 46 50 61
68
7/16-14 73 81 98 109
1/2-13 111 123 150 166
9/16-12 160 177 217 239
5/8-11 221 345 299 330
3/4-10
393 435
531 587
7/8-9 633 700 855 945
1-8 863 954 1165 1288
1004096 SAE5
1004096 SAE8