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dedek
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Type of Bolt?

03/05/2012 1:45 AM

on Top of Bolt , i Read " A4-70 "

What is the meaning ??
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MACA
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#1

Re: BOLT

03/05/2012 2:23 AM

It is the type of material it is made from. A4 group is austenitic steel, can't remember what the 70 means. Google it and I'm sure you can find an exact description.
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ozzb
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#2
In reply to #1

Re: BOLT

03/05/2012 7:13 AM

the last two number are 1/10 of the tensile strength

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CaptMoosie
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#3

Re: Type of Bolt?

03/06/2012 8:23 AM

Does that mean it's Grade 70? Just checking....

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Ried
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Join Date: Dec 2005
Posts: 1602
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#4

Re: Type of Bolt?

03/06/2012 10:16 AM

I submitted "A4-70 bolt" on an Ask.com query and got this link:

http://www.ehow.com/list_7543215_specifications-a470-bolt.html

The answer this site gave is a SS bolt to metric dimensions. Review the link for details

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MACA
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Location: Aberdeen, Scotland
Posts: 393
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#5

Re: Type of Bolt?

03/06/2012 10:40 AM

Property class 70, min tensile strength is 700 MPa. Source

http://www.bssa.org.uk/topics.php?article=1
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