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A51H20509 — UNION,HYDRAULIC SWIVEL

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

A51H20509: UNION,HYDRAULIC SWIVEL.

The UNION,HYDRAULIC SWIVEL is a the manufacturer industrial component. Key specifications include end_item_identification: GRUMMAN AIRCRAFT,MODEL F-14A A, general_characteristics_item_description: STEEL,CORROSION RESISTING; PASSIVATE FINISH; 5.249 IN. LG; 2.803 IN.

H; 1.124 IN. W IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-004-2852, 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
A51H20509
NSN: 4730-00-004-2852
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 26512 — NORTHROP GRUMMAN SYSTEMS CORPORATION (USA)
SPECIFICATIONS
end_item_identificationGRUMMAN AIRCRAFT,MODEL F-14A A
general_characteristics_item_descriptionSTEEL,CORROSION RESISTING; PASSIVATE FINISH; 5.249 IN. LG; 2.803 IN. H; 1.124 IN. W IN
NSN4730-00-004-2852
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: A51H20509 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL,CORROSION RESISTING; PASSIVATE FINISH; 5.249 IN. LG; 2.803 IN. H; 1.124 IN. W IN
TECHNICAL CHARACTERISTICS
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL,CORROSION RESISTING; PASSIVATE FINISH; 5.249 IN. LG; 2.803 IN. H; 1.124 IN. W IN
END ITEM IDENTIFICATIONGRUMMAN AIRCRAFT,MODEL F-14A A
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
A51H20509-1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A51H20509?
A51H20509 is a UNION,HYDRAULIC SWIVEL.
What parts can replace A51H20509?
There is 1 known substitute for A51H20509: A51H20509-1. Substitute compatibility should be verified for your specific system.
What is the NSN for A51H20509?
A51H20509 is cataloged in the U.S. Government catalog under NSN 4730-00-004-2852. 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.