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2003 Toyota Corolla Metric Bolt head markings

Tiny
CARGO
  • MEMBER
  • 2003 TOYOTA COROLLA
2003 Toyota Corolla

What does the two slash markings (II) on the heads of the four metric rear axle hub & bearing assembly bolts indicate. Those don't seem to be standard markings for metric bolts.
Thanks
Tuesday, September 8th, 2009 AT 12:31 PM

1 Reply

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Not a standard metric mark.

Metric bolts have the strenght stamped on the head, 8.8, 9.8, 10.9, 11.9.12.9.

Studs have a cross + stamped on them.

If replacing suspension bolts M8x1.25 or larger use at least a 10.9 bolt strength.
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Wednesday, September 9th, 2009 AT 5:34 AM

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