Manitowoc National Crane NC1400H - Weld Studs; Label Parts When Disassembling

National Crane Published 10-30-2014 Control # 040-09 5-7
1400H OPERATOR AND SERVICE MANUAL SERVICE
Table 5-7: UNC (Coarse) Thread: Torque Values for
Stainless Steel Fasteners with Oil Lubrication
NOTE: Stainless steel fasteners tend to gall while being
tightened. To reduce this risk, lubricate the threads
with oil or molybdenum disulfide and torque at low
speeds without interruptions. Do not use excessive
pressure. Impact wrenches are not recommended.
Table 5-8: Metric Coarse Thread: Torque Values for
Stainless Steel Fasteners with Oil Lubrication
NOTE: Stainless steel fasteners tend to gall while being
tightened. To reduce this risk, lubricate the threads
with oil or molybdenum disulfide and torque at low
speeds without interruptions. Do not use excessive
pressure. Impact wrenches are not recommended.
Weld Studs
Unless otherwise specified the following grade 2 torque
values (± 10%) apply.
Table 5-9: Weld Stud Torque Values
Label Parts When Disassembling
When removing or disconnecting a group of wires or
cables, tag each one to ensure proper identification during
re-assembly.
When shims are removed, tie them together and identify
them as to location. Keep shims clean and flat until they are
reinstalled.
Size
Torque Value
lb-in lb-ft
#5 (0.125) 6.9 —
#8 (0.164) 18 —
#10 (0.190) 21 —
1/4 68 —
5/16 120 10
3/8 210 17.5
7/16 340 28
1/2 —39
5/8 —74
3/4 —114
Size
Torque
Value
Nm
M2.5 0,4
M3 0,9
M4 1,5
M5 3,1
M6 5,3
M8 13,0
M10 27,0
M12 45,0
M14 71,1
M16 109
M18 157
M20 220
T-2-4
STUD SIZE TORQUE
#10
1/4 in
5/16 in-18
5/16 in-24
3/8 in
1/2 in
5/8 in
20 lb-in
4 lb-ft
9 lb-ft
10 lb-ft
14 lb-ft
35 lb-ft
70 lb-ft
Reference Only