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uni 3740

uni 3740

uni 3740

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.

RE: uni 3740

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.  

RE: uni 3740

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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