name. The primary equipment is followed first by its components,  and  second,  when  applicable,  by  related equipment   and   components.   The   name   of   the equipment is alphabetically arranged, and each type of specific  equipment  is  alphanumerical  by  type  of designation under the equipment listing or by physical characteristics when no type of designation exists. GSA  CATALOG The General Services Administration (GSA) has inventory  control  over  and  is  responsible  for  cataloging non-military items that are used by both military and civil agencies of the United States government. The GSA Supply Catalog is a handy reference for identifying consumable types of material. The GSA Supply Catalog is published in four volumes.  Volume  1  contains  an  alphabetical  index. Volume 2 contains an NSN index with current prices and other ordering information and changes to volume 1. Volume 3 contains descriptions of material in a format similar to the ASG. Volume 4 is a price list for volume  3. KODAK  PUBLICATIONS There are a number of catalogs published by the Eastman  Kodak  Company  that  lists  the  NSNs  of imaging equipment and materials that are on the GSA schedule. One publication that may be useful to you, as a supply petty officer, is the Commodity Oriented Procurement System (Electronic Data Interchange). This publication is commonly referred to as COPS or EDI. COPS is a catalog for Kodak photographic products and other items that are available through DGSC, Richmond, Virginia. COPS/EDI is a computer-to- computer system. To use the system, you must first fill out a requisition. The requisition must then be sent to base  supply  or  your  supply  department.  The  order  must then be transmitted to DGSC. DGSC transmits your order by computer to computers at various Kodak Regional  Distribution  Centers.  The  order  is  sent directly to your activity in 5 days for factory-stocked items and 30-45 days for special orders. NAVY STOCK LIST OF PUBLICATIONS AND FORMS The Navy Stock List of Publications and Forms, NAVSUP P-2002, commonly referred to as the "I Cog Catalog," consists of three sections as follows: Section I-Alphabetic/Numeric Listing of Form Numbers, Publications, Hull Numbers, Electronic Model   Numbers,   and   Standard   Subject Identification Codes for Cog 1I Forms. Section II-Alphabetic Listing of Publications and Forms  by  Title/Nomenclature. Section III-Numeric Listing of Publications and Form  Stock  Numbers  followed  by  technical directives (by type and directive number). Publications  and  Forms  are  sequenced  together. Microfiche  editions  of  NAVSUP  P-2002  are  issued quarterly; each edition reflects all current Cog 0I and 1I Publications and Forms. Section I and section III reflect information,  such  as  "Canceled,"  "No  Superseding Item,"  "Superseded  By,"  and  "Replaced  By." The Introduction to Navy Stock List of Publications and Form provides detailed information about the columnar  arrangement  of  the  stock  list.  Additionally,  it provides  the  instructions  for  requisitioning  publications and  forms. MANUFACTURERS' PART NUMBERS When replacement parts are needed, either to repair equipment or for ready spares, you usually must know the part number assigned by the manufacturer. Normally, the manufacturer affixes a part number on each item manufactured. This part number, coupled with knowledge of application and usage, leads to the nomenclature  and  National  Stock  Number  (NSN)  of  the part. The part number can be verified by referencing it to  the  appropriate  Illustrated  Parts  Breakdown  (IPB). The NSN may be obtained by referencing apart number to   the   appropriate   Consolidated  Master  Cross- Reference List (C-MCRL). You should remember that part   numbers   may   be   duplicated   by   various manufacturers;  therefore,  the  Federal  Supply  Code (FSC) for manufacturers must be considered when cross-referencing a part number to an NSN. Drawing  Number A drawing number consists of letters or numbers, or a combination of letters and numbers, that are assigned to a particular drawing for identification purposes.   The   activity   controlling   the   drawing (normally  the  manufacturer)  assigns  the  number conforming to their drawing numbering system. One drawing  may  apply  to  several  items;  thus  other distinguishing information is required to identify the item on the drawing. 5-7