Woods RC42.20 - Bolt Torque Chart

42 Appendix
MAN1298
(
08/01/2023
)
BOLT TORQUE CHART
Always tighten hardware to these values unless a different torque value or tightening procedure is listed for
a specic application.
Fasteners must always be replaced with the same grade as specied in the manual parts list.
Always use the proper tool for tightening hardware: SAE for SAE hardware and Metric for metric hardware.
Make sure fastener threads are clean and you start thread engagement properly.
All torque values are given to specications used on hardware dened by SAE J1701 MAR 99 & J1701M JUL 96.
SAE SERIES TORQUE CHART
SAE Bolt Head Identication
SAE Grade 2
(No Dashes)
SAE Grade 5
(3 Radial Dashes)
SAE Grade 8
(6 Radial Dashes)
Diameter (Inches) Wrench Size
Marking on Head
SAE 2 SAE 5 SAE 8
lbs-ft N-m lbs-ft N-m lbs-ft N-m
1/4" 7/16" 6 8 10 13 14 18
5/16" 1/2" 12 17 19 26 27 37
3/8" 9/16" 23 31 35 47 49 67
7/16" 5/8" 36 48 55 75 78 106
1/2" 3/4" 55 75 85 115 120 163
9/16" 13/16" 78 106 121 164 171 232
5/8" 15/16" 110 149 170 230 240 325
3/4" 1-1/8" 192 261 297 403 420 569
7/8" 1-5/16" 306 416 474 642 669 907
1" 1-1/2" 467 634 722 979 1020 1383
TYPICAL WASHER INSTALLATIONS
METRIC SERIES TORQUE CHART
Metric Bolt Head Identication
Metric
Grade 8.8
Metric
Grade 10.9
Diameter &
Thread Pitch
(Millimeters) Wrench Size
Coarse Thread Fine Thread
Diameter &
Thread Pitch
(Millimeters)
Marking on Head Marking on Head
Metric 8.8 Metric 10.9 Metric 8.8 Metric 10.9
N-m lbs-ft N-m lbs-ft N-m lbs-ft N-m lbs-ft
6 x 1.0 10 mm 8 6 11 8 8 6 11 8 6 x 1.0
8 x 1.25 13 mm 20 15 27 20 21 16 29 22 8 x 1.0
10 x 1.5 16 mm 39 29 54 40 41 30 57 42 10 x 1.25
12 x 1.75 18 mm 68 50 94 70 75 55 103 76 12 x 1.25
14 x 2.0 21 mm 109 80 151 111 118 87 163 120 14 x 1.5
16 x 2.0 24 mm 169 125 234 173 181 133 250 184 16 x 1.5
18 x 2.5 27 mm 234 172 323 239 263 194 363 268 18 x 1.5
20 x 2.5 30 mm 330 244 457 337 367 270 507 374 20 x 1.5
22 x 2.5 34 mm 451 332 623 460 495 365 684 505 22 x 1.5
24 x 3.0 36 mm 571 421 790 583 623 459 861 635 24 x 2.0
30 x 3.0 46 mm 1175 867 1626 1199 1258 928 1740 1283 30 x 2.0
Lock Washer
Flat Washer
Bolt