PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

ST251-1Disk Drive Unit

Seagate Technology · NSN 7025-01-269-7694 · FSC 7025 · No Item Name Available
Verified by PartsTable
NSN 7025-01-269-7694 — this item is cataloged by the U.S. Government under National Stock Number 7025-01-269-7694. Primary manufacturer part number: ST251-1.
Features
  • Disk Drive Unit — FSC 7025
  • Access Time in Milliseconds: 28.0
  • Unit Design: INTERNAL
  • Transfer Rate in Megabytes Per Second: 5.0
  • Data Storage Capacity: 42.80 MEGABYTES
  • Sector Type and Quantity: 17 HARD
  • Power Source: EXTERNAL
  • Voltage in Volts and Current Type: 12.0 AC
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Disk Drive Unit, cataloged under National Stock Number 7025-01-269-7694, is classified within Federal Supply Class 7025 (No Item Name Available) of the General Purpose ADP Equipment group. The primary manufacturer of record is Seagate Technology. Government technical data includes 26 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN7025-01-269-7694
Primary Part NumberST251-1
Item NameDisk Drive Unit
FSC / FSG7025 / 70 — No Item Name Available
ManufacturerSeagate Technology
StatusACTIVE
Access Time in Milliseconds28.0
Unit DesignINTERNAL
Transfer Rate in Megabytes Per Second5.0
Data Storage Capacity42.80 MEGABYTES
Sector Type and Quantity17 HARD
Power SourceEXTERNAL
Voltage in Volts and Current Type12.0 AC
Tracks Per Inch777.0
Drive Quantity1
Drive HeightFULL
Head Type and Quantity6 READ/WRITE
Design TypeHARD CARD
Drive Size5.25
Access Time in Milliseconds28.0
Unit DesignINTERNAL
Transfer Rate in Megabytes Per Second5.0
Data Storage Capacity42.80 MEGABYTES
Sector Type and Quantity17 HARD
Power SourceEXTERNAL
Voltage in Volts and Current Type12.0 AC
Tracks Per Inch777.0
Drive Quantity1
Drive HeightFULL
Head Type and Quantity6 READ/WRITE
Design TypeHARD CARD
Drive Size5.25
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Weight4.0000 lbs
Cube1.2789 cu ft
Verified Substitutes 3
3110-00-155-6723059094 INTERCHANGEABLE
Bearing,ball,annular
New Holland Construction
5340-00-393-4428SS845-2110253 INTERCHANGEABLE
Cover,access
Naval Ship Systems Command
5120-01-362-2200ST251 INTERCHANGEABLE
Socket
Textron Lycoming Inc Williamsport Plant
Cross-Reference Index
Part NumberManufacturer
5020168-004 Thales Uk Limited Dba Thales Uk Ltd Training and Simulation (GBR)
ST251 Intel Corporation (uk) Ltd (GBR)
ST251 Seagate Technology (USA)
ST251-1 PRIMARY Seagate Technology (USA)
Related Parts
3110-00-155-6723INTERCHANGEABLE
BEARING,BALL,ANNULAR
059094
5340-00-393-4428INTERCHANGEABLE
COVER,ACCESS
SS845-2110253
5120-01-362-2200INTERCHANGEABLE
SOCKET
ST251

Frequently Asked Questions

What is NSN 7025-01-269-7694?

NSN 7025-01-269-7694 is a Disk Drive Unit, manufactured by Seagate Technology, classified under FSC 7025 (No Item Name Available). Status: active.

What are the part numbers for NSN 7025-01-269-7694?

NSN 7025-01-269-7694 has 4 cross-referenced part numbers: 5020168-004 (Thales Uk Limited Dba Thales Uk Ltd Training and Simulation), ST251 (Intel Corporation (uk) Ltd), ST251 (Seagate Technology), ST251-1 (Seagate Technology).

What NSN replaces 7025-01-269-7694?

There are 3 known substitutes for 7025-01-269-7694: 3110-00-155-6723, 5340-00-393-4428, 5120-01-362-2200. Verify interchangeability with system specifications before substitution.

What are the specifications of ST251-1?

Key specifications for ST251-1: Access Time in Milliseconds: 28.0; Unit Design: INTERNAL; Transfer Rate in Megabytes Per Second: 5.0; Special Features: SHOCK RESISTANT, HIGHT PERFORMANCE, HIGHT-VOLUME, INDUSTRY PROVEN, STANDARD MOUNTING AND VOLTAGES, 12 WATTS OF POWER SINGLE PRINTED CIRCUIT BOARD. 28 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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