Toyota
Dodge Durango
 Service Manual
Introduction
Fastener identification

DESCRIPTION

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 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.

FASTENER IDENTIFICATION

FASTENER STRENGTH

FASTENER STRENGTH

Fastener usage

    More about «Introduction»:

    Vehicle identification number (vin) plate

    Vehicle safety certification label

    International symbols

    Fastener identification

    Fastener usage

    Metric system

    Torque references

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