Form Fit Function
Fit is short for fits intended application.
Form fit function. Form fit and function f3 is the identification and description of characteristics of a part or assembly. Form fit and function f3. Function is what the product. Form is the physical characteristics of the product.
Form fit function rules specify how far new versions of a part can deviate from the original before new part numbers are created. Physical functional and performance characteristics or specifications that uniquely identify a component or device and determine its interchangeability in a system. Typically if the change to a part is significant enough that the new part cannot be used in place of the previous version for example if the size of a screw changes then a new part number must be created. Fff form fit function and learning design while working on a project for a manufacturing organization a few months back i created a storyboard on form fit and function also referred to as fff or f3 in engineering parlance.
The f3 framework increases design change flexibility by allowing changes to the part with minimal documentation and design cost as long as the fit form and function of the product are maintained. Form fit and function models. It includes things like shape weight color material etc. But the object of our discussion is the form fit and function model which includes in its definition a very important subject for manufacturers.