Fastener Identification - Jeep 1997 Grand Cherokee Service Manual

WINDSHIELD BATTERY CHARGING CON- ENGINE COOLANT TEMPER- WINDSCREEN HEADLIGHTS, REAR WINDOW DEFOGGER REAR WINDOW WASHER LIGHTS, PANEL LIGHTS REAR WINDOW WIPER WINDSHIELD WASHER REAR HOOD (TRUNK) WINDSHIELD WIPER HAZARD WARNING AND DEFROSTING VENTILATING FAN PARKING BRAKE BRAKE FAILURE TURN SIGNAL FRONT HOOD WIPER FOG LIGHTS ENGINE OIL HIGH BEAM DEMISTING SEAT BELT LIGHTER PARKING WASHER DITION ATURE HORN FUEL AND
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GENERAL INFORMATION (Continued)
INTERNATIONAL VEHICLE CONTROL AND DISPLAY
SYMBOLS
INTERNATIONAL VEHICLE CONTROL AND
DISPLAY SYMBOLS
The graphic symbols illustrated in the following
chart (Fig. 3) are used to identify various instrument
controls. The symbols correspond to the controls and
displays that are located on the instrument panel.

FASTENER IDENTIFICATION

FASTENER IDENTIFICATION
THREAD IDENTIFICATION
SAE and metric bolt/nut threads are not the same.
The difference is described in the Thread Notation
chart (Fig. 4).
GRADE/CLASS IDENTIFICATION
The SAE bolt strength grades range from grade 2
to grade 8. The higher the grade number, the greater
the bolt strength. Identification is determined by the
INTERNATIONAL CONTROL AND DISPLAY SYMBOLS
Fig. 3
Fig. 4 Thread Notation—SAE and Metric
line marks on the top of each bolt head. The actual
bolt strength grade corresponds to the number of line
marks plus 2. The most commonly used metric bolt
strength classes are 9.8 and 12.9. The metric
strength class identification number is imprinted on
the head of the bolt. The higher the class number,
the greater the bolt strength. Some metric nuts are
imprinted with a single-digit strength class on the
nut face. Refer to the Fastener Identification and
Fastener Strength Charts.
INTRODUCTION 3