Fasteners Information
FASTENERS INFORMATIONMetric Fasteners
Most of the fasteners used for this vehicle are metric. When replacing any fasteners, it is most important that replacement fasteners be the correct diameter, thread pitch and strength.
Fastener Strength Identification
Most commonly used metric fastener strength property classes are 4T, 6.8, 7T, 8.8 and radial line with the class identification embossed on the head of each bolt. Some metric nuts will be marked with punch, 6 or 8 mark strength identification on the nut face. Figure shows the different strength markings.
When replacing metric fasteners, be careful to use bolts and nuts of the same strength or greater than the original fasteners (the same number marking or higher). It is likewise important to select replacement fasteners of the correct diameter and thread pitch. Correct replacement bolts and nuts are available through the parts division.
Metric bolts: Identification class numbers or marks correspond to bolt strength (increasing numbers represent increasing strength).
Standard Tightening Torque
Each fastener should be tightened to the torque specified in each section. If no description or specification is provided, refer to the given tightening torque chart for the applicable torque for each fastener. When a fastener of greater strength than the original one is used, however, use the torque specified for the original fastener.
Tightening Torque Chart
A equivalent of 4T strength fastener
A equivalent of 6.8 strength fastener without flange
A equivalent of 6.8 strength fastener with flange *:Self-lock nut (6 strength)
A equivalent of 7T strength fastener
A equivalent of 8.8 strength bolt (8 strength nut) without flange
A equivalent of 8.8 strength bolt (8 strength nut) with flange
NOTE:
- For the flanged bolt, flanged nut and self-lock nut of 4T and 7T strength, add 10% to the tightening torque given in the chart.
- The given chart is applicable only where the fastened parts are made of steel light alloy.