5-11
SPEC
GENERAL TORQUE
SPECIFICATIONS
This chart specifies torque for standard fasten-
ers with standard I.S.O. pitch treads. Torque
specifications for special components or
assemblies are included in the applicable sec-
tions of this book. To avoid warpage, tighten
multi-fastener assemblies in a crisscross fash-
ion, in progressive stages, until full torque is
reached. Unless otherwise specifications call
for clean, dry treads. Components should be at
room temperature.
DEFINITION OF UNITS
Tread size
Tightening torque
Nm
m·kg
ft·lb
M4
2
0.2
1.4
M5
3
0.3
2.2
M6
7
0.7
5.1
M7
10
1.0
7.2
M8
15
1.5
11
M10
30
3.0
22
M12
60
6.0
43
Unit
Read
Definition
Measure
mm
Millimeter
10
-3
meter
Length
cm
Centimeter
10
-2
meter
Length
kg
Kilogram
10
3
gram
Weight
N
Newton
1 kg
×
m/sec
2
Force
Nm
Newton meter
N
×
m
Torque
m·kg
Meter kilogram
m
×
kg
Torque
Pa
Pascal
N/m
2
Pressure
N/mm
Newton per millimeter
N/mm
Spring rate
L
Liter
—
Volume or capacity
cm
3
Cubic centimeter
r/min
Revolutions per minute
—
Engine speed
GENERAL TORQUE SPECIFICATIONS/
DEFINITION OF UNITS