MIL-HDBK-115B(ARMY) APPENDIX C
a. A quality conformance inspection and approval procedure is stated on the drawing or in a document referenced on the drawing. The drawing includes the following statement:
"ONLY THE ITEM DESCRIBED ON THIS DRAWING WHEN PROCURED FROM THE VENDOR(S) LISTED HEREON IS APPROVED BY (name and address of cognizant design activity) FOR USE IN THE APPLICATION(S) SPECIFIED HERON. A SUBSTITUTE ITEM SHALL NOT BE USED WITHOUT PRIOR APPROVAL BY (name of cognizant design activity) OR BY (name of Government procuring activity).
IDENTIFICATION OF THE APPROVED SOURCE(S) OF SUPPLY HERON IS NOT TO BE CONSTRUED AS A GUARANTEE OF PRESENT OR CONTINUED AVAILABILITY AS A SOURCE OF SUPPLY FOR THE ITEM DESCRIBED ON THE DRAWING."
b. Source control drawing numbers are part identification numbers. When more than one vendor is listed on a Source Control Drawing for items that are repairable and the repair parts are not interchangeable, each vendor's item is assigned a dash-number of the Source Control Drawing.
c. The source control drawing includes, under the heading "Approved Source(s) of Supply," the name and address or manufacturer's CAGE number, and item identification number of each item that has been tested and approved for use in the specific applications stated on the drawing. In addition, "SOURCE CONTROL DRAWING" is shown adjacent to the title block. The item(s) thus disclosed will be identified in all subsequent actions (including procurement) by the Source Control Drawing number. When another vendor's item is qualified for stated applications, or when a new critical application is found, and all vendor items cited on the drawing are approved for use in the new critical application, the drawing may be revised, rather than a new drawing issued to show the vendor or application. Each new vendor added must be approved for all stated applications.
d. Altered items, selected items, and items depicted in Federal, military, and recognized industry association standards or specifications are not delineated on source control drawings.
e. A source control drawing discloses, as applicable, configuration, dimensions of envelope, mounting and mating dimensions, interface dimensional characteristics, and limits to these dimensions. As necessary, it also discloses inspection and acceptance test requirements, performance, reliability, maintainability, environmental, and other functional requirements, to ensure identification and adequate reprocurement of an interchangeable item. If an electrical or electronics (or other engineering) circuit is involved, a schematic and connection or other appropriate diagrammatic disclosure is included on the drawing (or referenced thereon), thereby providing sufficient information for making external connections.
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