SKI 18BDC, Owner'S/Operator'S Manual

Page: 52 / 53

47
KSi 18BDC CONVEYOR
USER'S MANUAL
12– Bolt Torque Specifications
Proper torqueing of bolts, cap screws, studs and nuts is very important when assembling or installing any
component on a machine. The chart below lists bolt torques for most popular sizes of bolts. The chart also
applies to tightening studs or nuts. Refer to the chart whenever a bolt must be tightened on a machine.
Two columns of figures are shown for each type of bolt, dry and lubricated. The “dry” column would cover
bolts as they come from the package or bolts with no external lubrication applied. The second column covers
bolts externally lubricated with oil, white lead, anti-seize, graphite, etc. This column should also be used to
tighten bolts that are Loctite-applied.
Section
Diameter
No. Threads
Dry Torque Lub. Torque Dry Torque Lub. Torque
lbf­ft N­m lbf­ft N­m lbf­ft N­m lbf­ft N­m
4­40 12 1 9 1 8 0.9 6 0.6
6­32 23 2 17 1 16 1 12 1
8­32 41 4 31 3 30 3 22 2
10­24 60 6 45 5 43 4 32 3
1/4­20 144 16 108 12 96 10 75 8
lbf­ft N­m lbf­ft N­m lbf­ft N­m lbf­ft N­m
5/16­18 25 33 18 24 17 23 13 17
3/8­16 45 61 35 47 30 40 23 31
7/16­14 70 94 55 74 50 67 35 47
1/2­13 110 149 80 108 75 101 55 74
9/16­12 150 203 110 149 110 149 80 108
5/8­11 220 298 170 230 150 203 110 149
3/4­10 380 515 280 379 260 352 200 271
7/8­9 600 813 460 623 420 583 320 433
1­8 900 1,220 680 922 640 867 480 650
1 1/8­7 1,280 1,735 960 1,301 800 1,084 600 813
1 1/4­7 1,820 2,467 1,360 1,844 1,120 1,518 840 1,139
1 3/8­6 2,380 3,227 1,780 2,413 1,460 1,979 1,100 1,491
1 1/2­6 3,160 4,284 2,360 3,200 1,940 2,630 1,460 1,979
Grade 5
Grade 8