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21558-400 — MANIFOLD,HYDRAULIC SYSTEM ACCESS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

21558-400: MANIFOLD,HYDRAULIC SYSTEM ACCESS.

MANIFOLD,HYDRAULIC SYSTEM ACCESS. Key specifications include material: ALUMINUM ALLOY 6061, flange_width: 2.750 INCHES IN, flange_length: 2.750 INCHES IN, connection_type: FLANGE, RECTANGULAR W/HOLES, operating_pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-411-6495, 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
21558-400
NSN: 4730-01-411-6495
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 6061
flange_width2.750 INCHES IN
flange_length2.750 INCHES IN
connection_typeFLANGE, RECTANGULAR W/HOLES
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
end_connection_quantity8
NSN4730-01-411-6495
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 21558-400 · 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
•
CONNECTION TYPE: FLANGE, RECTANGULAR W/HOLES
•
END CONNECTION QUANTITY: 8
•
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
•
FLANGE WIDTH: 2.750 INCHES IN
•
MATERIAL: ALUMINUM ALLOY 6061
•
FLANGE LENGTH: 2.750 INCHES IN
TECHNICAL CHARACTERISTICS
CONNECTION TYPEFLANGE, RECTANGULAR W/HOLES
END CONNECTION QUANTITY8
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
FLANGE WIDTH2.750 INCHES IN
MATERIALALUMINUM ALLOY 6061
FLANGE LENGTH2.750 INCHES IN
SUBSTITUTES & CROSS-REFERENCES 1
211037463Same 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)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21558-400?
21558-400 is a MANIFOLD,HYDRAULIC SYSTEM ACCESS.
What parts can replace 21558-400?
There is 1 known substitute for 21558-400: 211037463. Substitute compatibility should be verified for your specific system.
What is the NSN for 21558-400?
21558-400 is cataloged in the U.S. Government catalog under NSN 4730-01-411-6495. 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.