Is it possible to access an instance variable via a static method?

In C#, is it possible to access an instance variable via a static method in different classes without using parameter passing?

In our project, I have a Data access layer class which has a lot of static methods. In these methods the SqlCommand timeout value has been hard-coded. In another class(Dac) in our framework there are many instance methods which call these static methods.

I don't want to code too much using parameter passing. Do you have any other solution which is easier than parameter passing?