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PartsTable / COMPONENT / AS5174J0603
AS5174J0603 ✓ 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 ADAPTER,STRAIGHT,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 304 OVERALL, reducer_type: CONCENTRIC, thread_class: 3A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE ALL ENDS, connection_style: FLARED W/ GASKET SEAL (BOSS) ALL ENDS, nominal_thread_size: 0.375 INCHES SECOND END IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-370-2806, 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
AS5174J0603
NSN: 4730-01-370-2806
FSC: 4730
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
materialSTEEL COMP 304 OVERALL
reducer_typeCONCENTRIC
thread_class3A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE ALL ENDS
connection_styleFLARED W/ GASKET SEAL (BOSS) ALL ENDS
nominal_thread_size0.375 INCHES SECOND END IN
nominal_overall_length1.328 INCHES IN
thread_series_designatorUNF SECOND END
specification/standard_data88044-AN919 GOVERNMENT STANDARD
nominal_outside_diameter_tube_accommodated0.188 INCHES SECOND END IN
NSN4730-01-370-2806
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: AS5174J0603 · 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 TUBE ALL ENDS
•
CONNECTION STYLE: FLARED W/ GASKET SEAL (BOSS) ALL ENDS
•
THREAD SERIES DESIGNATOR: UNF SECOND END
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.188 INCHES SECOND END IN
•
NOMINAL THREAD SIZE: 0.375 INCHES SECOND END IN
•
REDUCER TYPE: CONCENTRIC
•
SPECIFICATION/STANDARD DATA: 88044-AN919 GOVERNMENT STANDARD
TECHNICAL CHARACTERISTICS (FLIS)
CONNECTION TYPETHREADED EXTERNAL TUBE ALL ENDS
CONNECTION STYLEFLARED W/ GASKET SEAL (BOSS) ALL ENDS
THREAD SERIES DESIGNATORUNF SECOND END
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.188 INCHES SECOND END IN
NOMINAL THREAD SIZE0.375 INCHES SECOND END IN
REDUCER TYPECONCENTRIC
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.375 INCHES FIRST END IN
SPECIFICATION/STANDARD DATA88044-AN919 GOVERNMENT STANDARD
NOMINAL THREAD SIZE0.562 INCHES FIRST END IN
NOMINAL OVERALL LENGTH1.328 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
AS5174Interchangeable
interchangeable cross-reference
interchangeable
AS4841Interchangeable
interchangeable cross-reference
interchangeable
AN919-5JInterchangeable
Same NIIN cross-reference
interchangeable
SAE-AS4841Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AS5174J0603?
AS5174J0603 is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace AS5174J0603?
There are 4 known substitutes for AS5174J0603: AS5174, AS4841, AN919-5J and 1 more. Substitute compatibility should be verified for your specific system.
Is AS5174J0603 still available?
AS5174J0603 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026