Any assembled parts or sub-assemblies can be patterned in the assembly – linear, radial, reference or fill.

In the example below the bolts form a  reference pattern – they are following the patterned hole in the part file. In this setup you would need to make sure the first bolt is assembled to the original hole.

If this were a sub-assembly, say a bolt and a washer, then the sub-assembly would need to be assembled to a reference in the original hole.