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556-6406591-MPA — MANIFOLD ASSEMBLY,HYDRAULIC

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

556-6406591-MPA: MANIFOLD ASSEMBLY,HYDRAULIC.

The MANIFOLD ASSEMBLY,HYDRAULIC is a the manufacturer industrial component. Key specifications include furnished_items_and_quantity: 2 VALVE, end_item_design_control_activity: 96169, end_item_identification_designator: SEAWOLF CLASS SSN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-415-6374, 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
556-6406591-MPA
NSN: 4730-01-415-6374
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
end_connection_quantity4
furnished_items_and_quantity2 VALVE
end_item_design_control_activity96169
end_item_identification_designatorSEAWOLF CLASS SSN
NSN4730-01-415-6374
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 556-6406591-MPA · 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
•
FURNISHED ITEMS AND QUANTITY: 2 VALVE
•
END ITEM DESIGN CONTROL ACTIVITY: 96169
•
END CONNECTION QUANTITY: 4
•
END ITEM IDENTIFICATION DESIGNATOR: SEAWOLF CLASS SSN
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY2 VALVE
END ITEM DESIGN CONTROL ACTIVITY96169
END CONNECTION QUANTITY4
END ITEM IDENTIFICATION DESIGNATORSEAWOLF CLASS SSN
SUBSTITUTES & CROSS-REFERENCES 3
6406591Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
558-6406591-MPAD-ASSY-ASame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
6406591-ASSY ASame 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 556-6406591-MPA?
556-6406591-MPA is a MANIFOLD ASSEMBLY,HYDRAULIC.
What parts can replace 556-6406591-MPA?
There are 3 known substitutes for 556-6406591-MPA: 6406591, 558-6406591-MPAD-ASSY-A, 6406591-ASSY A. Substitute compatibility should be verified for your specific system.
What is the NSN for 556-6406591-MPA?
556-6406591-MPA is cataloged in the U.S. Government catalog under NSN 4730-01-415-6374. 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.