MIL-STD-1OOG
406.6 PIN length and application. PINs shall not exceed 15 characters. This number shall be or shall include the drawing number indicated on the drawing on which the item is described. Where more than one item is described on a drawing, unique identification shall be provided by the addition of a suffix identifier (formerly called dash number), with the following limitations: (For bulk items see 406.15.4).
a. The total length of the PIN including the suffix identifier shall not exceed 15 characters. b. The suffix identifier shall have the same characteristics as drawing numbers (see 406.5). c. Suffix identifiers may be used even if only one item is described on a drawing.
d. PINs shall not include the drawing revision (see 406.5.e).
e. Once assigned, PINs shall not be changed except as permitted or required by 406.10 and
406.13. When additional items are added to a drawing, the PINs of existing items shall not be changed, even if no suffix identifier was originally assigned.
NOTE: Contractor-manufacturer part and drawing numbering systems. Contractors and manufacturers are encouraged to forward to the Commander, Defense Logistics Services Center, ATTN: DLSC-FBA, Federal Center, Battle Creek, Michigan 49016 an explanation of their part and drawing number systems.
406.7 Records. A complete and accurate record of drawing numbers shall be maintained by the design activity allocating or assigning the numbers. Duplicate drawing number assignment within an assigned CAGE Code shall be avoided.
406.8 Associated lists. Associated lists shall be assigned the same identifying numbers as the parent drawing to which it pertains. This identifier shall be prefixed by the letters "PL" (for Parts List), "DL" (for Data List), "IL" (for Index List), "WL" (for Wire List), "AP" (for Application List), or "IDL" (for Indentured Data List), as applicable. This prefix becomes an integral part of the list identifier. When no parent drawing exists, associated lists shall be assigned a drawing number with the associated prefix "PL", "DL", "IL", "WL", "IDL", or "AL". The fifteen- character PIN limit shall not apply in those instances where the applicable associated list prefix plus the drawing number exceeds fifteen characters.
406.9 Transferring design responsibility to another activity. When the design responsibility
for engineering drawings is transferred from one design activity to another, the drawing number(s) and PIN(s) shall be transferred to the new design activity for administration. The new assignee shall add his CAGE Code, name, and address on the drawing by revision action to identify change in design responsibility. In no case will the original drawing identity be changed or relocated to indicate a new CAGE Code. Figure 400-2 illustrates an example of drawing notations indicating a transfer of design responsibility.
NOTE: In addition, the CAGE Code of the original design activity specified in the item identification marking requirement shall not be changed.
406.9.1 Maintaining design activity identities. When drawings are redrawn, the original
design activity CAGE Code and drawing number shall be shown in their applicable locations as on the original documentation. See Figure 400-2.
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