Dec 1, 2015 · In real terms, [RE P/N example above] the basic 12345-6 could be altered to include any/all of the lettered changes without materially changing the fit, form, function, …

Sep 7, 2007 · In addition to the form, fit and function rule, I always educate people with: -If the part is not backwards compatable, a part number change is required. The example I use most …

Sep 1, 2006 · ImnotfromMars This is why revision and part number change control need to follow SOPs, the new (possibly) part that is an inch longer will have a different component part …

Feb 22, 2011 · It becomes 234-678 NUTATING BRACKET. If the modification does not affect the form, fit and function of 123-456, you revise the drawing and update the BOM. If the …

Apr 20, 2009 · I am trying to find the ASME Y standard that governs replacing find numbers vs not replacing find numbers. I have found very open standards in global that basically state when …

Mar 31, 2010 · Most companies employ change classes on their engineering change documents to indicate whether the changes are major (affecting form, fit, or function) or minor (eg, typos). …

Feb 13, 2015 · Every now and then I run across someone using the term Fit,Form and Function, which to me is established in the engineering stage and verified in the inspection stage. The …

Dec 1, 2010 · "Class I changes affect an item's fit, form or function. These are changes that affect an item's specifications, weight, interchangeability, interfacing, reliability, safety, schedule, …

May 25, 2017 · All of my experience says to revise a drawing if there is a change to the Form, Fit, or Function of a given part. ANSI states if a part is not backward compatible then is gets a new …

Aug 18, 2008 · If you are changing form/fit/function then it should normally be a new part number. Either way, both options will require an ECO of some type to record the change/detail the new …