13. Form, Fit and Function
Form, Fit and Function is the identification and description of characteristics of a part or assembly. The
F3 framework increases design change flexibility by allowing changes to the part with minimal
documentation and design cost as long as the form, fit and function of the product are maintained.
If your company is using F3 you can think about it like this….. “I can have a box of parts, some Rev A,
some Rev B, etc…. When I reach in to get one to use on an assembly, it doesn’t matter which one I grab”
→ All Revisions of a part are completely interchangeable!