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Technical Data Sheet
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E120477 ✓ 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 RESTRICTOR UNIT,FLUID FLOW is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING FILTER, valve_size: 0.250 INCHES IN, design_type: STRAIGHT, thread_class: 3A LOCATION NOT OTHERWISE SPECIFIED A, thread_series: UNF LOCATION NOT OTHERWISE SPECIFIED, overall_length: 3.1875 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-555-1955, 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
E120477
NSN: 4730-00-555-1955
FSC: 4730
CAGE: 38597 — LOCKHEED MARTIN CORPORATION DIV ROTARY AND MISSION SYSTEMS (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING FILTER
valve_size0.250 INCHES IN
design_typeSTRAIGHT
thread_class3A LOCATION NOT OTHERWISE SPECIFIED A
thread_seriesUNF LOCATION NOT OTHERWISE SPECIFIED
overall_length3.1875 INCHES NOMINAL IN
pressure_rating3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
orifice_diameter0.0049 INCHES NOMINAL IN
thread_directionRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
unable_to_decodeUNABLE TO DECODE
width_across_flats1.000 INCHES NOMINAL IN
end_connection_typeTHREADED MALE, GASKET SEAL LOCATION NOT OTHERWISE SPECIFIED
NSN4730-00-555-1955
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: E120477 · 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
•
ANGLE BETWEEN CONNECTIONS: 12.000 DEGREES NOMINAL LOCATION NOT OTHERWISE SPECIFIED
•
MATERIAL: RUBBER SYNTHETIC PACKING
•
THREAD SERIES: UNF LOCATION NOT OTHERWISE SPECIFIED
•
END CONNECTION COMPONENT TYPE AND SIZE FOR WHICH DESIGNED: U/W 1/4 IN. OD TUBE IN
•
STRAINER TYPE AND QUANTITY: 1 FILTER
•
PRESSURE RATING: 3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
•
THREAD DIRECTION: RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
TECHNICAL CHARACTERISTICS (FLIS)
ANGLE BETWEEN CONNECTIONS12.000 DEGREES NOMINAL LOCATION NOT OTHERWISE SPECIFIED
MATERIALRUBBER SYNTHETIC PACKING
THREAD SERIESUNF LOCATION NOT OTHERWISE SPECIFIED
END CONNECTION COMPONENT TYPE AND SIZE FOR WHICH DESIGNEDU/W 1/4 IN. OD TUBE IN
MATERIALSTEEL CORROSION RESISTING FILTER
STRAINER TYPE AND QUANTITY1 FILTER
PRESSURE RATING3000.0 POUNDS PER SQUARE INCH (PSI) NOMINAL LBS
THREAD DIRECTIONRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
OPERATING TEMP RANGE-65.0 TO 160.0 FAHRENHEIT DEGF
VALVE SIZE0.250 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
52367Interchangeable
interchangeable cross-reference
interchangeable
13220E3622Interchangeable
interchangeable cross-reference
interchangeable
60464-1Interchangeable
interchangeable cross-reference
interchangeable
11022304-2Interchangeable
interchangeable cross-reference
interchangeable
65-10061-5Interchangeable
interchangeable cross-reference
interchangeable
408295-1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is E120477?
E120477 is a RESTRICTOR UNIT,FLUID FLOW.
What parts can replace E120477?
There are 6 known substitutes for E120477: 52367, 13220E3622, 60464-1 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for E120477?
E120477 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-555-1955. 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