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7550989 — ADAPTER,STRAIGHT,HOSE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

7550989: ADAPTER,STRAIGHT,HOSE TO BOSS.

The ADAPTER,STRAIGHT,HOSE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 12L14 OR STEEL OVERALL, thread_class: 2A SECOND END BULKHEAD A, connection_type: THREADED EXTERNAL BOSS SECOND END, connection_style: BARBED OR BEADED (HOSE) FIRST END, special_features: SUPPORTS GRUMMAN A10A AIRCRAFT, surface_treatment: CADMIUM AND CHROMATE OR CHROMATE ZINC OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-724-5692, 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
7550989
NSN: 4730-00-724-5692
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 19204 — ARMY, UNITED STATES DEPARTMENT OF THE DBA ROCK ISLAND ARSENAL JMTC (USA)
SPECIFICATIONS
materialSTEEL COMP 12L14 OR STEEL OVERALL
thread_class2A SECOND END BULKHEAD A
connection_typeTHREADED EXTERNAL BOSS SECOND END
connection_styleBARBED OR BEADED (HOSE) FIRST END
special_featuresSUPPORTS GRUMMAN A10A AIRCRAFT
surface_treatmentCADMIUM AND CHROMATE OR CHROMATE ZINC OVERALL
nominal_thread_size0.875 INCHES SECOND END BULKHEAD IN
nominal_overall_length3.594 INCHES IN
media_for_which_designedHYDRAULIC FLUID FIRST RESPONSE
thread_series_designatorUNF SECOND END BULKHEAD
furnished_items_and_quantity1 HOSE COUPLING SLEEVE AND 1 LOCKNUT AND 1 PREFORMED PACKING
nominal_inside_diameter_hose_accommodated0.500 INCHES FIRST END IN
NSN4730-00-724-5692
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 7550989 · 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: 1 HOSE COUPLING SLEEVE AND 1 LOCKNUT AND 1 PREFORMED PACKING
•
CONNECTION STYLE: BARBED OR BEADED (HOSE) FIRST END
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 0.500 INCHES FIRST END IN
•
NOMINAL OVERALL LENGTH: 3.594 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL BOSS SECOND END
•
NOMINAL THREAD SIZE: 0.875 INCHES SECOND END BULKHEAD IN
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY1 HOSE COUPLING SLEEVE AND 1 LOCKNUT AND 1 PREFORMED PACKING
CONNECTION STYLEBARBED OR BEADED (HOSE) FIRST END
CONNECTION STYLEDOUBLE THREADED SECTION W/ GASKET AND LOCKNUT SEALING (BOSS) SECOND END
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.500 INCHES FIRST END IN
NOMINAL OVERALL LENGTH3.594 INCHES IN
CONNECTION TYPETHREADED EXTERNAL BOSS SECOND END
CONNECTION TYPEUNTHREADED EXTERNAL HOSE FIRST END
NOMINAL THREAD SIZE0.875 INCHES SECOND END BULKHEAD IN
SPECIAL FEATURESSUPPORTS GRUMMAN A10A AIRCRAFT
SURFACE TREATMENTCADMIUM AND CHROMATE OR CHROMATE ZINC OVERALL
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 2
7550898-18Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
HG08-10RCReference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7550989?
7550989 is a ADAPTER,STRAIGHT,HOSE TO BOSS.
What parts can replace 7550989?
There are 2 known substitutes for 7550989: 7550898-18, HG08-10RC. Substitute compatibility should be verified for your specific system.
What is the NSN for 7550989?
7550989 is cataloged in the U.S. Government catalog under NSN 4730-00-724-5692. 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.