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GENERAL TORQUE
SPECIFICATIONS
This chart specifies torque for stan-
dard fasteners with standard I.S.O.
pitch threads. Torque specifications
for special components or assem-
blies are included in the applicable
sections of this book. To avoid
warpage, tighten multi-fastener as-
semblies in a crisscross fashion, in
progressive stages, until full torque is
reached. Unless otherwise specified,
torque specifications call for clean,
dry threads. Components should be
at room temperature.
DEFINITION OF UNITS
Unit
millimeter
mm
centimeter
cm
kilogram
kg
Newton
N
Newton meter
Nm
m•kg
Meter kilogram
Pa
Pascal
Newton per millimeter
N/mm
Liter
L
3
Cubic centimeter
cm
Revolution per minute
r/min
A. Distance between flats
B. Outside thread diameter
Read
-3
10
-2
10
3
10
gram
1 kg × m/sec
N × m
m × kg
2
N/m
N/mm
2-17
TIGHTENING TORQUES
(Nut)
mm
mm
mm
mm
mm
mm
Definition
meter
meter
2
TORQUE SPECIFI-
B
A
CATION
(Bolt
)
Nm
m•kg
10
6 mm
6
0.6
12
8 mm
15
1.5
14
10
30
3.0
mm
17
12
55
5.5
mm
19
14
85
8.5
mm
22
16
130
13
mm
Measure
Length
Length
Weight
Force
Torque
Torque
Pressure
Spring rate
Volume or capacity
Volume or capacity
Engine speed
ft•lb
4.3
11
22
40
61
94

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