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4730NR0045 — COUPLING ASSEMBLY,QUICK DISCONNE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

4730NR0045: COUPLING ASSEMBLY,QUICK DISCONNE.

COUPLING ASSEMBLY,QUICK DISCONNE. Key specifications include material: BRASS OVERALL, overall_length: 1.600 INCHES NOMINAL IN, connection_type: UNTHREADED EXTERNAL TUBE FIRST FLUID END CONNECTION, connection_style: GROOVED FIRST FLUID END CONNECTION, special_features: RELEASE BUTTON OFFERS QUICK AND EASY DISCONNECTIONS, style_designator: COUPLING ASSEMBLY. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-451-8498, 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
4730NR0045
NSN: 4730-01-451-8498
NIINs: 014518498, 014518502, 014518512, 014518516, 014518521, 014518529, 014518753, 014518764
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 16236 — DLA LAND AND MARITIME DBA ENGINEERING AND TECHNICAL SUPPORT DIV DOCUMENT STANDARDIZATION DIVISION (VENDOR ITEM DRAWINGS) (USA)
SPECIFICATIONS
materialBRASS OVERALL
overall_length1.600 INCHES NOMINAL IN
connection_typeUNTHREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
connection_styleGROOVED FIRST FLUID END CONNECTION
special_featuresRELEASE BUTTON OFFERS QUICK AND EASY DISCONNECTIONS
style_designatorCOUPLING ASSEMBLY
operating_pressure250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
maximum_operating_temp200.0 FAHRENHEIT FIRST RESPONSE DEGF
end_item_identificationMRAP BUFFALO MK2A2; MRAP MAXXPRO DASH ISS W/OGPK AND W/CROWS
quick_disconnect_methodPUSH-PULL ALL ENDS
furnished_items_and_quantity2 PREFORMED PACKING
nominal_outside_diameter_tube_accommodated0.375 INCHES FIRST FLUID END CONNECTION IN
NSN4730-01-451-8498
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4730NR0045 · 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 PREFORMED PACKING
•
CONNECTION STYLE: GROOVED FIRST FLUID END CONNECTION
•
CONNECTION TYPE: UNTHREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
•
STYLE DESIGNATOR: COUPLING ASSEMBLY
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.500 INCHES FIRST FLUID END CONNECTION IN
•
OPERATING PRESSURE: 250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
MAXIMUM OPERATING TEMP: 200.0 FAHRENHEIT FIRST RESPONSE DEGF
TECHNICAL CHARACTERISTICS
FURNISHED ITEMS AND QUANTITY2 PREFORMED PACKING
CONNECTION STYLEGROOVED FIRST FLUID END CONNECTION
CONNECTION TYPEUNTHREADED EXTERNAL TUBE FIRST FLUID END CONNECTION
STYLE DESIGNATORCOUPLING ASSEMBLY
OVERALL LENGTH2.120 INCHES NOMINAL IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.500 INCHES FIRST FLUID END CONNECTION IN
OPERATING PRESSURE250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
MAXIMUM OPERATING TEMP200.0 FAHRENHEIT FIRST RESPONSE DEGF
MAXIMUM OPERATING TEMP40.0 FAHRENHEIT SINGLE RESPONSE DEGF
SPECIAL FEATURESRELEASE BUTTON OFFERS QUICK AND EASY DISCONNECTIONS
SUBSTITUTES & CROSS-REFERENCES 2
10653243-3Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
4730NR0045 ITEM NO. 06Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4730NR0045?
4730NR0045 is a COUPLING ASSEMBLY,QUICK DISCONNE.
What parts can replace 4730NR0045?
There are 2 known substitutes for 4730NR0045: 10653243-3, 4730NR0045 ITEM NO. 06. Substitute compatibility should be verified for your specific system.
What is the NSN for 4730NR0045?
4730NR0045 is cataloged in the U.S. Government catalog under NSN 4730-01-451-8498. 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.