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Technical Data Sheet
PartsTable / STORAGE_HDD / TP520
TP520 ✓ Verified by PartsTable
— · STORAGE_HDD · 3.5_SATA_HDD
WHAT YOU NEED TO KNOW
SAS backplane supports SATA, not vice versa NL-SAS = SAS protocol at nearline (7.2K) speed — NOT SATA
Gen8 LFF tray ≠ Gen10 tray — different screw holes
PRODUCT OVERVIEW

CONTROL BOX,ELECTRICAL,ARMAMENT. Key specifications include material: METAL CONTAINER/CARTRIDGE, design_type: NONREUSABLE, body_diameter: 4.188 INCHES NOMINAL IN, flow_direction: OUTSIDE IN, style_designator: CYLINDRICAL W/ CONTAINER (RIGID), body_overall_length: 6.750 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 7025-01-551-2391, 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→ TP520
NSN: 7025-01-551-2391
FSC: 7025
CAGE: 08125 — U S DEPT OF TRANSPORTATION FEDERAL AVIATION ADMINISTRATION (USA)
SPECIFICATIONS
materialMETAL CONTAINER/CARTRIDGE
design_typeNONREUSABLE
body_diameter4.188 INCHES NOMINAL IN
flow_directionOUTSIDE IN
style_designatorCYLINDRICAL W/ CONTAINER (RIGID)
body_overall_length6.750 INCHES NOMINAL IN
body_inside_diameter1.625 INCHES NOMINAL IN
filtering_media_designPLEATED SINGLE FILTERING MEDIA RESPONSE
end_item_identificationAIRPORT SURVEILLANCE RADAR EQUIPMENT 3 (ASDE3)
media_for_which_designedFUEL/OIL, HYDROCARBON
part_name_assigned_by_controlling_agencyFLOPPY DRIVE ADAPTER ASSEMBLY
NSN7025-01-551-2391
COMPONENT DIAGRAM
RELEASE LATCH — NL-SAS 7.2K TP520 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 TP520 MFR OEM
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONAIRPORT SURVEILLANCE RADAR EQUIPMENT 3 (ASDE3)
PART NAME ASSIGNED BY CONTROLLING AGENCYFLOPPY DRIVE ADAPTER ASSEMBLY
END ITEM IDENTIFICATIONAIRPORT SURVEILLANCE RADAR EQUIPMENT 3 (ASDE3)
PART NAME ASSIGNED BY CONTROLLING AGENCYFLOPPY DRIVE ADAPTER ASSEMBLY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 2
323960R91Interchangeable
interchangeable cross-reference
interchangeable
CW158MInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is TP520?
TP520 is a CONTROL BOX,ELECTRICAL,ARMAMENT. It is classified as a STORAGE_HDD (3.5_SATA_HDD).
What parts can replace TP520?
There are 2 known substitutes for TP520: 323960R91, CW158M. Substitute compatibility should be verified for your specific system.
What is the NSN for TP520?
TP520 is cataloged in the Federal Logistics Information System (FLIS) under NSN 7025-01-551-2391. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026