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Technical Data Sheet
PartsTable / COMPONENT / 5404-8-4
5404-8-4 ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The UNION,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, connection_type: THREADED EXTERNAL PIPE ALL ENDS, connection_style: PLAIN (PIPE) ALL ENDS, style_designator: THREADED, nominal_thread_size: 0.250 INCHES SECOND END IN, end_item_identification: WHEEL MOUNTED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-431-9172, 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
5404-8-4
NSN: 4730-01-431-9172
FSC: 4730
CAGE: 5E240 — BRENNAN INDUSTRIES (USA)
SPECIFICATIONS
materialSTEEL OVERALL
connection_typeTHREADED EXTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
style_designatorTHREADED
nominal_thread_size0.250 INCHES SECOND END IN
end_item_identificationWHEEL MOUNTED
thread_series_designatorNPT ALL ENDS
NSN4730-01-431-9172
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 5404-8-4 · 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 TYPE: THREADED EXTERNAL PIPE ALL ENDS
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: THREADED
•
CONNECTION STYLE: PLAIN (PIPE) ALL ENDS
•
NOMINAL THREAD SIZE: 0.250 INCHES SECOND END IN
•
THREAD SERIES DESIGNATOR: NPT ALL ENDS
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION TYPETHREADED EXTERNAL PIPE ALL ENDS
MATERIALSTEEL OVERALL
STYLE DESIGNATORTHREADED
END ITEM IDENTIFICATIONWHEEL MOUNTED
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
NOMINAL THREAD SIZE0.250 INCHES SECOND END IN
THREAD SERIES DESIGNATORNPT ALL ENDS
NOMINAL THREAD SIZE0.500 INCHES FIRST END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
3070AS576Interchangeable
interchangeable cross-reference
interchangeable
5404-8Interchangeable
interchangeable cross-reference
interchangeable
3070AS576-11Interchangeable
interchangeable cross-reference
interchangeable
3070AS576-9Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5404-8-4?
5404-8-4 is a UNION,PIPE.
What parts can replace 5404-8-4?
There are 4 known substitutes for 5404-8-4: 3070AS576, 5404-8, 3070AS576-11 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5404-8-4?
5404-8-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-431-9172. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026