characteristics of the item by means of its engineering drawings.
specifications standards, and inspection requirements to identify
an item or range of items.
a. USABLE ON CODE. The usable on code appears in the lower
left corner of the Description column heading.
Usable on codes
are shown as "UOC . . . . ." in the Description column (left
on the first line
of a p p l i c a b l e
Uncoded items are applicable to all
Identification of the usable on codes used in the RPSTL
Bulk materials required to
manufacture items are listed in the Bulk Material Group of this
Part numbers for bulk materials are also referenced in
the description column of the line item entry for the item to be
Detailed fabrication instructions for
items source coded to be manufactured/fabricated are found in
Detailed assembly instructions
for i t e m s s o u r c e coded to be assembled from c o m p o n e n t
Line item entries for repair parts kits appear in
a group in Section II (see Table of Contents).
Items which have the word BULK in the
figure column will have an index number shown in the item number
This index number is a cross-reference between the
National Stock Number/Part Number Index and the bulk material
list in Section II.
How to Locate Repair Parts.
When National Stock Number or Part Number is Not Known.
Using the Table of Contents, determine the
assembly group or subassembly group to which the item belongs.
This is necessary since figures are prepared for assembly groups
and subassembly groups, and listings are divided into the same
Find the figure covering the assembly group
or subassembly group to which the item belongs.
Identify the item on the figure and use the
Figure and Item Number Index to find the NSN.
When National Stock Number/Part Number is Known.