General Torque Specifications and Conversion factors

Submitted by xjcdadmin on Tue, 05/18/2010 - 11:34

General torque specifications

This chart specifies torque for standard fasteners with standard I.S.O. pitch threads. Torque specifications for special components or assemblies are included in the applicable sections of this book. To avoid warpage, tighten multi-fastener assemblies in a criss-cross 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.

A (Nut)

B (Bolt)

General torque specifications

m-kg

ft-lb

10 mm

6 mm

0.6

4.5

12 mm

8 mm

1.5

11

14 mm

10 mm

3.0

22

17 mm

12 mm

5.5

40

19 mm

14 mm

8.5

51

22 mm

16 mm 13.0

94

 

CONVERSION TABLES

METRIC TO INCH SYSTEM

 

KNOWN

MULTIPLIER

RESULT

TORQUE

m-kg

7.233

ft-lb

m-kg

86.80

in-lb

cm-kg

0.0723

ft-lb

cm-kg

0.8680

in-lb

WT.

kg

2.205

lb

9

0.03527

oz

FLOW /

DISTAMCE

km/lit

2.352

mpg

km/hr

0.6214

mph

km

0.6214

mi

m

3.281

ft

m

1.094

yd

cm

0.3937

in

mm

0.03937

in

VOLUME/

CAPACITY

cc (cm3)

0.03382

oz (US liq)

cc (cm )

0.06102

cu. m

lit (liter)

2.1134

pt (US liq)

lit (liter)

1.057

qt (US liq)

lit (liter)

0.2642

gal (US liq)

MISC.

kg/mm

56.0C7

lb/in

kg/cm

14.2234

psi (lb/in2)

Centigrade (°C) 9/5(°C) + 32 Fahrenheit (° F)

INCH TO METRIC SYSTEM

 

KNOWN

MULTIPLIER

RESULT

TORQUE

ft-lb

0.13826

m-kg

in-lb

0.01152

m-kg

ft-lb

13.831

cm-kg

in-lb

1.1521

cm-kg

WT.

lb

0.4535

kg

oz

28.352

g

FLOW /

DISTANCE

mpg

0.4252

km/lit

mph

1.609

km/hr

mi

1.609

km

ft

0.3048

m

yd

0.9141

m

in

2.54

cm

in

25.4

mm

VOLUME /

CAPACITY

oz (US liq)

29.57

cc (cm )

cu.in

16.387

cc "cm )

pt (US liq)

0.4732

lit (liter)

qt (US liq)

0.9461

lit (liter)

gal (US liq)

3.785

lit (liter)

MISC.

lb/in

0.017855

kg/mm

psi (lb/in )

0.07031

kg/cm2

Fahrenheit (°C)

5/9(°F-32)

Centigrade (°F)

DEFINITION OF TERMS:

m-kg

=

Meter-kilogram(s) (usually torque)

9

=

Gram(s)

kg

=

Kilogram(s) (1,000 grams)

lit

=

Liter(s)

km/lit

=

Kilometer(s) per liter (fuel consumption)

cc

=

Cubic centimeter(s) (cm3) (volume or capacity)

kg/mm

=

Kilogram(s) per millimeter (usually spring compression rate)

kg/cm2

=

Kilogram(s) per square centimeter (pressure)