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WD40B — DISK DRIVE UNIT

✓ Government record, cited
— · STORAGE_HDD · 3.5_SATA_HDD
PRODUCT OVERVIEW

WD40B: DISK DRIVE UNIT.

The DISK DRIVE UNIT is a the manufacturer hard disk drive designed for enterprise environments demanding consistent performance and data integrity. Key specifications include drive_size: 3.50, design_type: HARD DISK, unit_design: INTERNAL, drive_height: FULL, data_storage_capacity: 40.00 GIGABYTES, end_item_identification: 23 TV. This part is cataloged in the U.S.

Government catalog under NSN 7025-01-504-4802, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
STORAGE_HDD→ 3.5_SATA_HDD→ WD40B
NSN: 7025-01-504-4802
FSC: 7025 — Information Technology Input/output and Storage Devices
CAGE: 081T5 — PC CORNER COMPUTER CENTER , LLC (USA)
SPECIFICATIONS
drive_size3.50
design_typeHARD DISK
unit_designINTERNAL
drive_heightFULL
drive_quantity1
data_storage_capacity40.00 GIGABYTES
end_item_identification23 TV
NSN7025-01-504-4802
COMPONENT DIAGRAM
RELEASE LATCH — NL-SAS 7.2K WD40B OEM NL-SAS INTERFACE INTERPOSER SAS drive in SATA tray? Check board compatibility 3.5" (101.6 x 146mm) LFF 3.5" DRIVE | — | NL-SAS 7.2K NL-SAS uses SAS protocol at 7.2K RPM | SAS backplane supports SATA, not reverse Tray generation matters | Gen8 LFF tray differs from Gen10 TITLE LFF 3.5" DRIVE PN WD40B MFR OEM
KEY FEATURES
•
DESIGN TYPE: HARD DISK
•
DRIVE QUANTITY: 1
•
DRIVE SIZE: 3.50
•
DRIVE HEIGHT: FULL
•
DATA STORAGE CAPACITY: 40.00 GIGABYTES
•
UNIT DESIGN: INTERNAL
TYPICAL APPLICATIONS
  • Enterprise storage arrays and SANs
  • Direct-attached storage (DAS) expansion
  • Database tier storage (OLTP, OLAP)
  • Virtual machine datastore expansion
  • Backup-to-disk and disaster recovery targets
  • Content delivery and media streaming storage
TECHNICAL CHARACTERISTICS
DESIGN TYPEHARD DISK
DRIVE QUANTITY1
DRIVE SIZE3.50
DRIVE HEIGHTFULL
END ITEM IDENTIFICATION23 TV
DATA STORAGE CAPACITY40.00 GIGABYTES
UNIT DESIGNINTERNAL
OTHER ITEMS IN FSC 7025 — Information Technology Input/output and Storage Devices
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
7025-00-001-2681 7025-00-001-5588 7025-00-001-6998 7025-00-001-6999 7025-00-001-7000 7025-00-001-7025 7025-00-001-7026 7025-00-001-7027
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is WD40B?
WD40B is a DISK DRIVE UNIT. It is classified as a STORAGE_HDD (3.5_SATA_HDD).
What is the NSN for WD40B?
WD40B is cataloged in the U.S. Government catalog under NSN 7025-01-504-4802. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.