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Technical Data Sheet
PartsTable / COMPONENT / 578-2.5
578-2.5 ✓ Verified by PartsTable
— · DRIVE SFF
WHAT YOU NEED TO KNOW
SAS backplane accepts SATA drives (not vice versa) Buy with tray when possible — saves cost vs separate tray
ALWAYS ASK: "Does it come with tray/caddy?"
PRODUCT OVERVIEW

The 578-2.5 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-287-4234, 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
578-2.5
NSN: 4820-00-287-4234
FSC: 4820
CAGE: 48422 — WILLIAM POWELL COMPANY, THE DBA POWELL VALVE DIV THE STARFLO CORPORATION (USA)
SPECIFICATIONS
Part Number578-2.5
NSN4820-00-287-4234
COMPONENT DIAGRAM
LATCH — SAS — 578-2.5 SAS CONN WITH TRAY — HOT-PLUG READY Tray: See server gen — SAS — 578-2.5 BARE DRIVE — NO LATCH Needs caddy/tray to install 2.5" (70 x 100mm) SFF 2.5" DRIVE | — | SAS — Always ask: "Does it come with tray/caddy?" | Tray PN varies by server generation TITLE SFF 2.5" DRIVE PN 578-2.5 CAP — SAS
KEY FEATURES
•
CONNECTION TYPE: THREADED INTERNAL PIPE ALL ENDS
•
CONNECTION STYLE: PLAIN, OPTIONAL END (PIPE) ALL ENDS
•
FLOW CONTROL DEVICE: DISK
•
MAXIMUM OPERATING TEMP: 150.0 FAHRENHEIT SECOND RESPONSE DEGF
•
THREAD DIRECTION: RIGHT-HAND ALL ENDS
•
VALVE OPERATION METHOD: AUTOMATIC
•
MATERIAL: COPPER ALLOY 836 OVERALL
•
MEDIA FOR WHICH DESIGNED: STEAM FIRST RESPONSE
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
CONNECTION STYLEPLAIN, OPTIONAL END (PIPE) ALL ENDS
FLOW CONTROL DEVICEDISK
MAXIMUM OPERATING TEMP150.0 FAHRENHEIT SECOND RESPONSE DEGF
THREAD DIRECTIONRIGHT-HAND ALL ENDS
VALVE OPERATION METHODAUTOMATIC
MATERIALCOPPER ALLOY 836 OVERALL
MEDIA FOR WHICH DESIGNEDSTEAM FIRST RESPONSE
SPECIFICATION/STANDARD DATA59646-MSS SP-80 MANUFACTURERS STANDARD
OPERATING PRESSURE200.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SECOND RESPONSE LBS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 30
34212Interchangeable
interchangeable cross-reference
interchangeable
0600Interchangeable
interchangeable cross-reference
interchangeable
FF-B-187AInterchangeable
interchangeable cross-reference
interchangeable
BT478Interchangeable
interchangeable cross-reference
interchangeable
478Interchangeable
interchangeable cross-reference
interchangeable
905531Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 578-2.5?
578-2.5 is a 578-2.5.
What parts can replace 578-2.5?
There are 30 known substitutes for 578-2.5: 34212, 0600, FF-B-187A and 27 more. Substitute compatibility should be verified for your specific system.
Is 578-2.5 still available?
578-2.5 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026