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21578-400 — MANIFOLD,HYDRAULIC SYSTEM ACCESS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

21578-400: MANIFOLD,HYDRAULIC SYSTEM ACCESS.

MANIFOLD,HYDRAULIC SYSTEM ACCESS. Key specifications include material: ALUMINUM ALLOY, connection_type: FLANGE, ROUND W/O HOLES, end_item_design_control_activity: 78062, end_item_identification_designator: LEVEL III VALVE. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-389-2869, 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
21578-400
NSN: 4730-01-389-2869
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 78062 — SARGENT AEROSPACE & DEFENSE, LLC DBA SARGENT CONTROLS & AEROSPACE DIV SARGENT CONTROLS & AEROSPACE (USA)
SPECIFICATIONS
materialALUMINUM ALLOY
connection_typeFLANGE, ROUND W/O HOLES
end_connection_quantity4
end_item_design_control_activity78062
end_item_identification_designatorLEVEL III VALVE
NSN4730-01-389-2869
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 21578-400 · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
END ITEM DESIGN CONTROL ACTIVITY: 78062
•
CONNECTION TYPE: FLANGE, ROUND W/O HOLES
•
END CONNECTION QUANTITY: 4
•
END ITEM IDENTIFICATION DESIGNATOR: LEVEL III VALVE
•
MATERIAL: ALUMINUM ALLOY
TECHNICAL CHARACTERISTICS
END ITEM DESIGN CONTROL ACTIVITY78062
CONNECTION TYPEFLANGE, ROUND W/O HOLES
END CONNECTION QUANTITY4
END ITEM IDENTIFICATION DESIGNATORLEVEL III VALVE
MATERIALALUMINUM ALLOY
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 1
211040213Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is 21578-400?
21578-400 is a MANIFOLD,HYDRAULIC SYSTEM ACCESS.
What parts can replace 21578-400?
There is 1 known substitute for 21578-400: 211040213. Substitute compatibility should be verified for your specific system.
What is the NSN for 21578-400?
21578-400 is cataloged in the U.S. Government catalog under NSN 4730-01-389-2869. 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.