Letter 30073

What is spec Type II Class B Spec. 57-0-2 [Illinois] 

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I have an old print in front of me and need to know a plating spec. It is: Type II Class B Spec. 57-0-2 I was wondering if you know what that is?

Thank you,

Nancy Kowalski
All Rite Spring Company - Spring Grove, IL, USA

Ed. note: It doesn't mean anything to me as it stands, Nancy. If you know it's for nickel, or whatever other metal it is, or if you know it to be a Mil spec or not, then maybe someone can help--but the 57-0-2 doesn't seem to mean anything to our readers so far.

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