M A E D A Crawler Crane 6.6 STANDARD TIGHTENING TORQUES
5/2020 CC1908S-1 6-13
STANDARD TIGHTENING TORQUES
BOLT & NUT TIGHTENING TORQUE
Unless otherwise specified, torque metric bolts and nuts to the values
shown in the following table:
Determine the appropriate tightening torque based on the width across flats (b) of the bolt or nut.
[1] Strength class "8.8" bolts
Nominal size
(a)
Width across flats
(b)
Target tightening torque Tightening torque range
mm mm ftꞏlbs Nꞏm kgfꞏm ftꞏlbs Nꞏm kgfꞏm
6 10 5.8 7.8 0.80 5.0-6.6 6.8-9.0 0.70-0.92
8 13 14.0 19.0 1.95 12.2-16.2 16.5-21.9 1.70-2.24
10 17 27.7 37.5 3.85 24.0-31.8 32.6-43.1 3.35-4.43
12 19 48.3 65.5 6.70 42.0-55.5 57.0-75.3 5.85-7.70
14 22 76.7 104 10.6 66.7-88.5 90.4-120 9.2-12.2
16 24 120 163 16.6 105-138 142-187 14.4-19.1
18 27 165 224 22.8 144-190 195-258 19.8-26.2
20 30 235 318 32.4 204-270 277-366 28.2-37.3
22 32 319 432 44.0 277-367 376-497 38.3-50.6
24 36 405 549 56.0 352-465 477-631 48.7-64.4
27 41 593 804 81.9 516-682 699-925 71.2-94.2
30 46 804 1090 111 699-922 948-1250 96.5-128
33 50 1095 1485 151 952-1261 1290-1710 131-174
36 55 1409 1910 194 1224-1623 1660-2200 167-223
To Next Page
Loading...
