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Old 05-23-2003, 09:16 PM   #1
turner
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MY02 RS, 5MT

Default bolt...uh...codes?

Anyone know what the letters, like "E," on the heads of engine bay bolts mean?
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Old 05-24-2003, 08:12 AM   #2
DrD
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Not sure if they are special Subaru bolts, but in general the markings on the bolt head identify it's strength - a plain old "E" isn't a standard marking, though...
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Old 05-27-2003, 10:38 AM   #3
WaldorfSalad
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Many bolt manufacturers add their own makers' mark to the bolt head to identify them. For example, Nucor bolts have a stylized N on the heads.

There are also markings that show what grade the bolt is. Check out this page to see what the grade markings mean. Most fasteners you see in cars are spec'ed to SAE J429 or ASTM A354. Metric fasteners have different markings, usually with a numbered designation on the bolt head.

-Joe
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Old 06-19-2003, 09:28 PM   #4
A_Train
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Quote:
Originally posted by WaldorfSalad
Many bolt manufacturers add their own makers' mark to the bolt head to identify them. For example, Nucor bolts have a stylized N on the heads.

There are also markings that show what grade the bolt is. Check out this page to see what the grade markings mean. Most fasteners you see in cars are spec'ed to SAE J429 or ASTM A354. Metric fasteners have different markings, usually with a numbered designation on the bolt head.

-Joe
Exactly, the E is just the supplier so Subaru has some traceability on parts
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