Add Existing Specifications to a Part
Add Existing Specifications to a PartAccess a part.
Click Specifications on the Part Category Tree.
Click 
on the page tool bar.
Select Add Existing . . . .
The Find Specifications window displays.
Enter search criteria and click Find.
Use the check boxes 
to select specification(s) to add.
Click Submit.
The Specifications page redisplays with the new specification(s).