waratah HTH618C, Operator'S Manual

Page: 70 / 92

Maintenance: General
T7M7G6M,0000576 -19-03SEP20-1/1
Additional Metric Cap Screw Torque Values
CAUTION: Only use metric tools on metric
hardware; other tools may not fit properly.
They may slip and cause injury.
DO NOT use these values if a different torque value or
tightening procedure is given for a specific application.
Torque values listed are for general use only. Periodically
check the tightness of fasteners.
Shear bolts are designed to fail under predetermined
loads. Always replace shear bolts with bolts of the
identical class.
Fasteners should be replaced with the same or higher
class. If higher class fasteners are used, only tighten
them to the strength of the original.
Make sure fastener threads are clean and start thread
engagement properly. This will prevent them from failing
when tightening.
Tighten cap screws with lock nuts to approximately 50 per
cent of the amount shown in the chart.
METRIC CAP SCREW TORQUE VALUES
T-Bolt H-Bolt M-Bolt
Nomi-
nal Di-
ameter N·m lb-ft N·m lb-ft N·m lb-ft
8 29 21 20 15 10 7
10 63 46 45 33 20 15
12 108 80 88 65 34 25
14 176 130 137 101 54 40
16 265 195 206 152 78 58
18 392 289 294 217 118 87
20 539 398 392 289 167 125
22 735 542 539 398 216 159
24 931 687 686 506 274 202
27 1372 1012 1029 759 392 289
30 1911 1410 1421 1049 539 398
33 2548 1890 1911 1410 735 542
36 3136 2314 2401 1772 931 687
T6873AA
—UN—15APR13
T6873AB
—UN—18OCT88
T6873AC
—UN—18OCT88
3-3-5 090721
PN=70