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J4476 ✓ 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

PANEL,CONTROL,ELECTRICAL-ELECTRO. Key specifications include material: STEEL COMP 303SE OVERALL, nut_style: TUBE COUPLING, nut_height: 0.350 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNIFIED NATIONAL COARSE (UNC), thread_direction: RIGHT-HAND. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-147-4906, 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
J4476
NSN: 4730-01-147-4906
FSC: 4730
CAGE: 56586 — EG&G, INC. OPTOELECTRONICS DIVISION DIV JUDSON TECHNOLOGIES (USA)
SPECIFICATIONS
materialSTEEL COMP 303SE OVERALL
nut_styleTUBE COUPLING
nut_height0.350 INCHES NOMINAL IN
thread_class2B
thread_seriesUNIFIED NATIONAL COARSE (UNC)
thread_directionRIGHT-HAND
width_across_flats0.188 INCHES NOMINAL IN
nominal_thread_size0.125 INCHES IN
thread_quantity_per_inch40
NSN4730-01-147-4906
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: J4476 · 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
•
THREAD SERIES: UNIFIED NATIONAL COARSE (UNC)
•
NUT STYLE: TUBE COUPLING
•
THREAD QUANTITY PER INCH: 40
•
WIDTH ACROSS FLATS: 0.188 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.125 INCHES IN
•
NUT HEIGHT: 0.350 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 303SE OVERALL
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
NUT STYLETUBE COUPLING
THREAD QUANTITY PER INCH40
WIDTH ACROSS FLATS0.188 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.125 INCHES IN
NUT HEIGHT0.350 INCHES NOMINAL IN
MATERIALSTEEL COMP 303SE OVERALL
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS2B
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
T251MInterchangeable
interchangeable cross-reference
interchangeable
412384-1Interchangeable
interchangeable cross-reference
interchangeable
75-140Interchangeable
interchangeable cross-reference
interchangeable
4476Interchangeable
interchangeable cross-reference
interchangeable
13217E3055Interchangeable
interchangeable cross-reference
interchangeable
MILLENNIUMInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is J4476?
J4476 is a PANEL,CONTROL,ELECTRICAL-ELECTRO.
What parts can replace J4476?
There are 8 known substitutes for J4476: T251M, 412384-1, 75-140 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for J4476?
J4476 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-147-4906. 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