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uni 3740

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Tagger

Mechanical
Aug 10, 2001
47
I have an Italian drawing of a double end stud where in the material spec. has 10.9 UNI 3740. I assume the bolt should conform to Class 10.9. Can anyone steer me in the direction or give explanation for the Italian standard UNI 3740.
Thanks!
 
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The classes in UNI 3740 correspond to ISO 898 and Yes, it's Class 10.9. The material should be galvanized steel, but I'm not completely sure about that.
 
It is highly unlikely that hot dip galvanizing or zinc electroplating (sometimes referred to as galvanizing by non-English speakers) would be specified with property class 10.9 fasteners due to the risks of hydrogen embrittlement.
 
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