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AAR300LB3-4C0UP — COUPLING,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

AAR300LB3-4C0UP: COUPLING,PIPE.

The COUPLING,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, connection_type: THREADED INTERNAL PIPE ALL ENDS, connection_style: PLAIN (PIPE) ALL ENDS, style_designator: THREADED INTERNAL, surface_treatment: OXIDE OVERALL, operating_pressure: 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-175-9408, 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
AAR300LB3-4C0UP
NSN: 4730-00-175-9408
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 14959 — CRANE CO DIV VALVE DIV (USA)
SPECIFICATIONS
materialSTEEL OVERALL
connection_typeTHREADED INTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
style_designatorTHREADED INTERNAL
surface_treatmentOXIDE OVERALL
operating_pressure300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.750 INCHES ALL ENDS IN
nominal_overall_length2.125 INCHES IN
thread_series_designatorNPT ALL ENDS
NSN4730-00-175-9408
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AAR300LB3-4C0UP · 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: PLAIN (PIPE) ALL ENDS
•
NOMINAL OVERALL LENGTH: 2.125 INCHES IN
•
CONNECTION TYPE: THREADED INTERNAL PIPE ALL ENDS
•
STYLE DESIGNATOR: THREADED INTERNAL
•
OPERATING PRESSURE: 300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
NOMINAL THREAD SIZE: 0.750 INCHES ALL ENDS IN
•
SURFACE TREATMENT: OXIDE OVERALL
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
NOMINAL OVERALL LENGTH2.125 INCHES IN
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
STYLE DESIGNATORTHREADED INTERNAL
OPERATING PRESSURE300.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NOMINAL THREAD SIZE0.750 INCHES ALL ENDS IN
SURFACE TREATMENTOXIDE OVERALL
MATERIALSTEEL OVERALL
THREAD SERIES DESIGNATORNPT 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
23351P11Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AAR300LB3-4C0UP?
AAR300LB3-4C0UP is a COUPLING,PIPE.
What parts can replace AAR300LB3-4C0UP?
There is 1 known substitute for AAR300LB3-4C0UP: 23351P11. Substitute compatibility should be verified for your specific system.
What is the NSN for AAR300LB3-4C0UP?
AAR300LB3-4C0UP is cataloged in the U.S. Government catalog under NSN 4730-00-175-9408. 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.