The size dimensions at maximum material condition of 3.72 length and 3.07 width assures interachangeable fit with the interface control document. ASME-Y14.5 The Basic Method is made up of five steps, and a couple of substeps, that can eliminate dozens of procedures. The method will reduce clutter and redundancy and replace datum references, MMC and RFS feature control symbols. Profile tolerances express and simplify tolerancing intent, add clarity and eliminate other forms of excessive tolerances, especially for complex contours. The first step is to set some ground rules.
All dimensions are basic.
To ensure interchangeability, assemblies need three related parts to verify the cumulative effects of tolerance. Any more than three is redundant. The design uses a box and cover assembly that fits the ICD, as shown in the corresponding drawings. There are two kinds of dimensions, size and position. The cover must also fit the assembly.