g. The three primary data elements with which the MCRL is concerned are the
reference number, the CAGE code, and the NSN.
(1) The reference number is a number, other than an active NSN, which is
used to identify or partially identify an item-of-supply.
(a) It may vary in length or composition. The MCRL will print up to a
maximum of 32 positions. When the actual length exceeds 32 positions, a dash is printed
in the 32nd position.
(b) It can be a manufacturer's part number, drawing number, model
number, type number, specification number, or a Federal/Military specification and
(2) The sequence of characters within reference numbers in the MCRL is:
blanks, symbols or special characters, alphabetic characters in their normal sequence,
and numerical sequenced 0 through 9.
(a) All reference numbers are left-justified, meaning that they are never
recorded with a blank in the first position.
(b) No reference number in the MCRL is listed with a symbol or special
character in the first position.
(c) Symbols have a set order in which they are sequenced within
reference numbers. Refer to figure 1-11.
Figure 1-11. Established special character sequence.