Help Identifying a bolt
Help Identifying a bolt
(OP)
I have 8 hex head bolts I pulled from a load cell and cannot identify the manufacturer or properties of these bolts. The only information I have is engraved on the head of the bolt is the symbol "I^2" (without the ^ symbol).
Can anyone help point me in the right direction here?
Can anyone help point me in the right direction here?





RE: Help Identifying a bolt
Patricia Lougheed
******
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RE: Help Identifying a bolt
I cannot find a clue anywhere as to who made this or what it's properties may be.
RE: Help Identifying a bolt
Can anyone help suggest what grade this might be?
RE: Help Identifying a bolt
Patricia Lougheed
******
Please see FAQ731-376: Eng-Tips.com Forum Policies: Eng-Tips.com Forum Policies for tips on how to make the best use of the Eng-Tips Forums.
RE: Help Identifying a bolt
Comprehension is not understanding. Understanding is not wisdom. And it is wisdom that gives us the ability to apply what we know, to our real world situations
RE: Help Identifying a bolt
RE: Help Identifying a bolt
It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.
RE: Help Identifying a bolt
to approximate tensile strength, which assumes carbon and alloy steels in the annealed, normalized, and quenched-and-tempered conditions.
RE: Help Identifying a bolt
It is better to have enough ideas for some of them to be wrong, than to be always right by having no ideas at all.
RE: Help Identifying a bolt
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RE: Help Identifying a bolt
Then you pull the 9th bolt in half and record the tension. Use that (destroyed) bolt as a material sample, and compare its chemistry to the rest.
RE: Help Identifying a bolt
B.E.
The good engineer does not need to memorize every formula; he just needs to know where he can find them when he needs them. Old professor
RE: Help Identifying a bolt
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The I2 symbol doesn't seem to be in there. The only other reference that I can find that is more of an international one is "The Fastener Manufacturer Identification Symbols International Guide" by Fastener Technology. I don't have a copy of this, so I don't know if the I2
Patricia Lougheed
******
Please see FAQ731-376: Eng-Tips.com Forum Policies: Eng-Tips.com Forum Policies for tips on how to make the best use of the Eng-Tips Forums.
RE: Help Identifying a bolt
Assuming through hardened to 45Rc, this is a relatively high hardness for a threaded fastener. What is the application for these fasteners?