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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
kg
kilogram
Newton
N
Newton meter
Nm
m•kg
Meter kilogram
Pascal
Pa
Newton per millimeter
N/mm
L
Liter
3
Cubic centimeter
cm
Revolution per minute
r/min
A. Distance between flats
B. Outside thread diameter
Read
-3
10
meter
-2
10
meter
3
10
gram
1 kg × m/sec
N × m
m × kg
2
N/m
N/mm
2-17
TIGHTENING TORQUES
A
(Bolt
(Nut)
10
6 mm
mm
12
8 mm
mm
14
mm
mm
17
mm
mm
19
mm
mm
22
mm
mm
Definition
Length
Length
Weight
2
Force
Torque
Torque
Pressure
Spring rate
—
Volume or capacity
—
Volume or capacity
—
Engine speed
TORQUE SPECIFI-
B
CATION
)
Nm
m•kg
ft•lb
6
0.6
4.3
15
1.5
11
10
30
3.0
22
12
55
5.5
40
14
85
8.5
61
16
130
13
94
Measure
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