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989-7780 — COUPLING HALF,QUICK DISCONNECT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

989-7780: COUPLING HALF,QUICK DISCONNECT.

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: STEEL BODY, thread_class: 2A ALL ENDS A, overall_length: 2.89 INCHES NOMINAL IN, nominal_thread_size: 1.06 INCHES ALL ENDS IN, end_item_identification: 2320-01-534-1887, nominal_outside_diameter: 1.73 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-679-5498, 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
989-7780
NSN: 4730-01-679-5498
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 34914 — HIAB USA INC (USA)
SPECIFICATIONS
materialSTEEL BODY
thread_class2A ALL ENDS A
overall_length2.89 INCHES NOMINAL IN
nominal_thread_size1.06 INCHES ALL ENDS IN
end_item_identification2320-01-534-1887
nominal_outside_diameter1.73 INCHES IN
thread_quantity_per_inch12 ALL ENDS
thread_series_designatorUN ALL ENDS
nominal_width_across_flats1.50 INCHES IN
part_name_assigned_by_controlling_agencyFITTING, ST, MM, QUICK COUPLING, FILTER
NSN4730-01-679-5498
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 989-7780 · 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
•
NOMINAL WIDTH ACROSS FLATS: 1.50 INCHES IN
•
NOMINAL THREAD SIZE: 1.06 INCHES ALL ENDS IN
•
NOMINAL OUTSIDE DIAMETER: 1.73 INCHES IN
•
THREAD CLASS: 2A ALL ENDS A
•
THREAD QUANTITY PER INCH: 12 ALL ENDS
TECHNICAL CHARACTERISTICS
NOMINAL WIDTH ACROSS FLATS1.50 INCHES IN
OVERALL LENGTH2.89 INCHES NOMINAL IN
NOMINAL THREAD SIZE1.06 INCHES ALL ENDS IN
NOMINAL OUTSIDE DIAMETER1.73 INCHES IN
PART NAME ASSIGNED BY CONTROLLING AGENCYFITTING, ST, MM, QUICK COUPLING, FILTER
THREAD CLASS2A ALL ENDS A
END ITEM IDENTIFICATION2320-01-534-1887
THREAD QUANTITY PER INCH12 ALL ENDS
MATERIALSTEEL BODY
THREAD SERIES DESIGNATORUN ALL ENDS
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
4466594Reference document
Same NSN cross-reference
Reference document — Vendor item drawing reference
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 989-7780?
989-7780 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 989-7780?
There is 1 known substitute for 989-7780: 4466594. Substitute compatibility should be verified for your specific system.
What is the NSN for 989-7780?
989-7780 is cataloged in the U.S. Government catalog under NSN 4730-01-679-5498. 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.