FASTENER IDENTIFICATION
DESCRIPTION
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
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 10.9. 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 (Fig. 2) and (Fig. 3).
Fig. 1 INTERNATIONAL CONTROL AND DISPLAY SYMBOLS
1
High Beam
13
Rear Window Washer
2
Fog Lamps
14
Fuel
3
Headlamp, Parking Lamps, Panel Lamps
15
Engine Coolant Temperature
4
Turn Warning
16
Battery Charging Condition
5
Hazard Warning
17
Engine Oil
6
Windshield Washer
18
Seat Belt
7
Windshield Wiper
19
Brake Failure
8
Windshield Wiper and Washer
20
Parking Brake
9
Windscreen Demisting and Defrosting
21
Front Hood
10
Ventilating Fan
22
Rear hood (Decklid)
11
Rear Window Defogger
23
Horn
12
Rear Window Wiper
24
Lighter
VA
INTRODUCTION
3
