Product Details | DISK DRIVE UNIT

7025-01-479-2507 An electromechanical item which accepts and systematically retains digital input data in such a manner as to facilitate the rapid recovery of stored information. The item may or may not consist of disk(s) some of which are removable, hard, removable disk packs, fixed disks, or removable flexible, each surface coated with a material susceptible to spot magnetization, integral writing, a drive motor and its mechanical linkage, and data translating heads for impressing on or removing from the disk surface data in digital form. The item is a component of an electronic computer. See also, MAGNETIC DRUM, DATA STORAGE; CORE MEMORY UNIT.

Part Alternates: WD205AA, WD400EB, 7025-01-479-2507, 01-479-2507, 7025014792507, 014792507

Automatic Data Processing Equipment (Including Firmware), Software, Supplies and Support Equipment | ADP Input/Output and Storage Devices

Supply Group (FSG) NSN Assign. NIIN
70 17 OCT 2000 01-479-2507

Cross Reference | NSN 7025-01-479-2507

Part Number Cage Code Manufacturer
WD205AA 52840 WESTERN DIGITAL CORP
WD400EB 52840 WESTERN DIGITAL CORP

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Technical Data | NSN 7025-01-479-2507

Characteristic Specifications
UNIT DESIGN INTERNAL
DESIGN TYPE HARD DISK
DRIVE SIZE 3.50
DRIVE QUANTITY 3
DATA STORAGE CAPACITY 20.50 GIGABYTES
ACCESS TIME IN MILLISECONDS 9.5
INTERFACE TYPE EIDE
INTERLEAVE RATE RATIO 1.0
POWER SOURCE EXTERNAL
VOLTAGE IN VOLTS AND CURRENT TYPE 12.0 DC
OVERALL LENGTH 5.750 INCHES NOMINAL
OVERALL HEIGHT 1.000 INCHES NOMINAL
OVERALL WIDTH 4.000 INCHES NOMINAL
UNPACKAGED UNIT WEIGHT 1.100 POUNDS
OPERATING TEMP RANGE 41.0 TO 131.0 DEG FAHRENHEIT

Restrictions/Controls & Freight Information | NSN 7025-01-479-2507

Category Code Description
Shelf-Life Code:0Nondeteriorative
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Demilitarization Code:ANon-Munitions List Item/ Non-Strategic List Item - Demilitarization not required.
Controlled Inventory Item Code:UUNCLASSIFIED
Precious Metals Indicator Code:AItem does not contain precious metal
Criticality Code:X The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Automatic Data Processing Equipment:4ADP Input/Output and Storage Devices Used to Control and Transfer Information to and from a CPU. The input device is used for transferring data and instructions into a CPU. The output device is used to transfer results of processing by the CPU onto printed forms, punched cards, and/or magnetic media. Input/output devices combine the above functions in the same device. This class also includes data transmission terminals, batch terminals, and display terminals which are specially designed or modified to be used in conjunction with digital, analog, or hybrid CPUs. It includes modems when they are integral to the terminal. It also includes storage devices in which data can be inserted, retained, and retrieved for later use.
Category Code Description
NMF Description 116030 MACHINES ETC DATA PROCESSING
Less than car load rating
Less than truck load rating W Rating Variable
Water commodity Code 738 unknown
Originating Activity Code KZ Defense Supply Center Philadelphia
Philadelphia, PA 19101
Air Dimension Code A Shipment is not a consolidation and does not exceed 72 inches in any dimension.
Air Commodity H Signal Corps supplies and equipment, including radio equipment and supplies, communications equipment and supplies, electrical equipment and supplies, etc.
Air Special Handling Z No special handling required.
Special Handling Code 9 unknonwn
HAZMAT
Type of Cargo Z No special type of cargo code applicable

Management | NSN 7025-01-479-2507

Category Code Description
Cognizance Codes9BNavy-owned stocks of DLA material
Naval Inventory Control Point, Mechanicsburg
Source of SupplySMSDefense Logistics Agency
Enterprise Business Systems
AgencyDNDepartment of the Navy
Service OrganizationNU.S. Navy
Acquisition Advice CodesVTERMINAL ITEM # Identifies items in stock, but future procurement is not authorized. Requisitions may continue to be submitted until stocks are exhausted. Preferred item National Stock Number is normally provided by application of the phrase: When Exhausted Use (NSN). Requisitions will be submitted in accordance with IMM/Service requisitioning procedures as applicable.
Controlled Item CodeUUNCLASSIFIED
Shelf Life Code0Nondeteriorative
Purchasing QTY
UOM
1
EA : Each