Change 1 D-1
COMPONENTS OF END ITEM (COEI) AND BASIC ISSUE ITEMS (BII) LISTS
SECTION I. INTRODUCTION
This appendix lists components of the end item and basic issue items for the HWR to help you inventory the items for
safe and efficient operation of the equipment.
The Components of End Item (COEI) and Basic Issue Items (BII) lists are divided into the following sections:
a. Section II, Components of End Item. This listing is for information purposes only and is not authority to requisition
replacements. These items are part of the HWR. As part of the end item, these items must be with the end item
whenever it is issued or transferred between property accounts. Items of COEI are removed and separately packaged
for transportation or shipment only when necessary. Illustrations are furnished to help you find and identify the items.
b. Section III, Basic Issue Items. These essential items are required to place the HWR in operation, to operate it
and to perform emergency repairs. Although shipped separately packaged, the BII must be with the HWR during
operation and whenever it is transferred between property accounts. This list is your authority to request/requisition
them for replacement based on authorization of the item by the TOE/MTOE. Illustrations are furnished to help you find
and identify the items.
D-3. EXPLANATION OF COLUMNS (Sections II and III)
An explanation of the column entries in Sections II and III is as follows:
a. ILLUSTRATION NUMBER ILLUST No.). This column indicates the number of the illustration in which the item is
b. NATIONAL STOCK NUMBER. This column indicates the National Stock Number (NSN) assigned to the item and
used to request or requisition the item.
c. DESCRIPTION, CAGEC AND PART NUMBER. This column contains the Federal item name and, if required, a
description to identify and locate the item. The last line for each item indicates the Commercial and Government Entity
Code (CAGEC) in parenthesis followed by the part number.
d. USABLE ON CODE (UOC). This column contains a 3-digit code, which identifies the different model types on
which the item is used. Uncoded items are applicable to all models.
e. UNIT OF MEASURE (U/M). This column indicates the measure used in performing the operation/maintenance
function and is expressed by a 2-character alphabetical abbreviation (e.g., EA, IN, PR).
f. QUANTITY (CITY). This column indicates the quantity of the item authorized to be used with/on the HWR.