DI-QCIC-80890A
Mechanical Worst Case Analysis Report of Dimensions and Tolerances
This DID establishes the format and content preparation instructions for a report documenting a mechanical worst case tolerance analysis performed on parts, subassemblies, assemblies and equipment.
Approval DateNovember 21, 2006
AMSC Number7655
Preparing Activity—
Project Number—
OPRNS/I5223
DTIC ApplicableNo
GIDEP ApplicableNo
Limitation—
Applicable Forms—
Approval Limitation—
Form Version—
DID Formatdd_form_1664
963C CompliantNo
DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.
Application & Interrelationship
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Use & Relationship
This report documents a mechanical worst case tolerance analysis performed on parts, subassemblies, assemblies and equipment.
This Data Item Description (DID) contains the format and content preparation instructions for the data product generated by the specific and discrete task equipment for this data included in the contract.
The documentation required by this DID is used to support the configuration end item product interchangeability requirements in the contract.
This DID is applicable whenever a contract requires mechanical designs with tolerance features.
This DID supersedes DI-QCIC-80890.
Preparation Instructions
1Reference documents.None.
2Format:The report shall be in contractor's format and shall be no larger than 8 1/2 by 11".
3Content:The report shall contain the following:
3.1Title page.The first page of the report shall be a title page and shall contain the following about the applicable part, subassembly, assembly or equipment analyzed:
3.1.5Preparer of analysis
3.2Table of contents.The second page of the report shall be a table of contents.
3.3Body of report.The body of the report shall include the following:
3.3.1Summary.A summary of the analysis, highlighting the potential problem areas.
3.3.2Introduction.Introduction information shall include the following:
3.3.2.1Title of each analysis performed
3.3.2.2Description of each analysis performed, or reference to the appropriate Government document
3.3.2.3Identification of the applicable parts, subassemblies, assemblies of equipment analyzed.
3.3.2.4Requirements to be met
3.3.2.5Reason for performing analysis
3.3.3Data base.The data base shall include the following:
3.3.3.1A list of all drawings/part list
3.3.3.2Any reference documents
3.3.3.3All form tolerances
3.3.3.4Justification for the use of any tolerances
3.3.4Analysis.Analysis information shall contain the following:
3.3.4.1Statement identifying the parts, subassembly, assembly of equipment being analyzed.
3.3.4.2Verification that a worst case tolerance analysis allows no excessive interferences, clearances, or excursions to exist that would cause failure.
3.3.4.3Verification that the part, subassembly, assembly or equipment performs properly under all applicable environmental conditions.
3.3.4.4A tolerance distribution for economical processing of the part, subassembly, assembly or equipment.
3.3.4.5Applicable areas of engineering drawings or sketches to assist in the understanding of the analysis
3.3.4.6All calculations relevant to the analysis
3.3.4.7Any problems of potential problems with the part, subassembly, assembly or equipment.
3.3.5Conclusion.The conclusion shall contain the following:
3.3.5.1A summary of the analysis results.
3.3.5.2Recommendations to correct any problems or potential problems noted during the analysis.
Schema v3.0Community-maintained · Verify against ASSIST 