It seems you’re asking for a helpful guide about a file named .
Would you like to upload the file or share more details? Nbr 5460 Em.pdf
However, I don’t have direct access to your local files or specific documents unless you upload them or provide their contents. Based on the naming pattern, this could be a technical standard, a manufacturer’s datasheet, or an internal document — possibly related to Brazilian standards (NBR), as “NBR” often refers to Associação Brasileira de Normas Técnicas standards, and “Em” might indicate an English version. It seems you’re asking for a helpful guide