Yamaha WR250FM service manual General Torque Specifications, Definition of Units

GENERAL TORQUE SPECIFICATIONS/ DEFINITION OF UNITS

SPEC

EC220001

GENERAL TORQUE SPECIFICATIONS

This chart specifies torque for standard fasten- ers with standard I.S.O. pitch threads. 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 specified, torque specifications call for clean, dry threads. Com- ponents should be at room temperature.

A	B		TORQUE
		SPECIFICATION
(Nut)	(Bolt)
		Nm		m•kg	ft•lb
10 mm	6 mm	6		0.6	4.3
12 mm	8 mm	15		1.5	11
14 mm	10 mm	30		3.0	22
17 mm	12 mm	55		5.5	40
19 mm	14 mm	85		8.5	61
22 mm	16 mm	130		13	94

A:Distance between flats

B:Outside thread diameter

EC230000

DEFINITION OF UNITS

Unit	Read	Definition	Measure
mm	millimeter	10-3meter	Length
cm	centimeter	10-2meter	Length
kg	kilogram	103 gram	Weight
N	Newton	1 kg ⋅ m/sec2	Force
Nm	Newton meter	N ⋅ m	Torque
m • kg	Meter kilogram	m ⋅ kg	Torque
Pa	Pascal	N/m2	Pressure
N/mm	Newton per millimeter	N/mm	Spring rate
L	Liter	—	Volume or capacity
cm3	Cubic centimeter	—	Volume or capacity
r/min	Revolution per minute	—	Engine speed

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