PartsTable
Technical Data Sheet
Download PDF

11477173-4 — COUPLING HALF,QUICK DISCONNECT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

11477173-4: COUPLING HALF,QUICK DISCONNECT.

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: STEEL BODY, leg_length: 0.879 INCHES NOMINAL IN, thread_class: 3A ALL ENDS A, overall_length: 1.376 INCHES NOMINAL IN, connection_type: THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION, connection_style: FLARED ALL ENDS. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-465-9591, 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
11477173-4
NSN: 4730-01-465-9591
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 18876 — US ARMY AVIATION AND MISSILE COMMAND (USA)
SPECIFICATIONS
materialSTEEL BODY
leg_length0.879 INCHES NOMINAL IN
thread_class3A ALL ENDS A
overall_length1.376 INCHES NOMINAL IN
connection_typeTHREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
connection_styleFLARED ALL ENDS
style_designatorMALE COUPLING HALF
nominal_thread_size1.875 INCHES ALL ENDS IN
end_item_identificationRADAR SET TRAILE MOUNTED1430-01-418-4396
thread_quantity_per_inch12 FIRST QUICK DISCONNECT END
thread_series_designatorUNIFIED NATIONAL JOINT (UNJ) ALL ENDS
nominal_outside_diameter_tube_accommodated1.000 INCHES ALL ENDS IN
NSN4730-01-465-9591
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 11477173-4 · 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 STYLE: FLARED ALL ENDS
•
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 1.000 INCHES ALL ENDS IN
•
LEG LENGTH: 0.879 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 1.875 INCHES ALL ENDS IN
•
THREAD CLASS: 3A ALL ENDS A
TECHNICAL CHARACTERISTICS
CONNECTION STYLEFLARED ALL ENDS
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
STYLE DESIGNATORMALE COUPLING HALF
OVERALL LENGTH1.376 INCHES NOMINAL IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED1.000 INCHES ALL ENDS IN
LEG LENGTH0.879 INCHES NOMINAL IN
NOMINAL THREAD SIZE1.875 INCHES ALL ENDS IN
THREAD CLASS3A ALL ENDS A
END ITEM IDENTIFICATIONRADAR SET TRAILE MOUNTED1430-01-418-4396
THREAD QUANTITY PER INCH12 FIRST QUICK DISCONNECT END
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
7116-16A-L25-T3Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
Ready to buy 11477173-4?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 11477173-4?
11477173-4 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 11477173-4?
There is 1 known substitute for 11477173-4: 7116-16A-L25-T3. Substitute compatibility should be verified for your specific system.
What is the NSN for 11477173-4?
11477173-4 is cataloged in the U.S. Government catalog under NSN 4730-01-465-9591. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 11477173-4

✓ 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.