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Technical Data Sheet
PartsTable / COMPONENT / 401-4S
401-4S ✓ 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 HOSE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, seat_angle: 45.0 DEGREES FIRST END, thread_class: 2B FIRST END, connection_type: THREADED INTERNAL TUBE FIRST END, connection_style: GRIPPING NIPPLE (NOSE) SECOND END, operating_pressure: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-217-2429, 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
401-4S
NSN: 4730-00-217-2429
FSC: 4730
CAGE: 00624 — EATON AEROQUIP LLC DBA JACKSON NORTH 1 DIV FLUID AND ELECTRICAL DISTRIBUTION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
seat_angle45.0 DEGREES FIRST END
thread_class2B FIRST END
connection_typeTHREADED INTERNAL TUBE FIRST END
connection_styleGRIPPING NIPPLE (NOSE) SECOND END
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.438 INCHES FIRST END IN
maximum_operating_temp212.0 FAHRENHEIT SINGLE RESPONSE DEGF
nominal_overall_length1.734 INCHES IN
end_item_identification2320-01-097-0248,2320-01-097-0249,2320-01-100-7672,2320-01-097-0260,2320-01-195-7641, HEMTT FAMILY (HEAVY EXPANDED MOBILITY TACTICAL TRUCKS)
thread_series_designatorUNF FIRST END
furnished_items_and_quantity1 HOSE COUPLING NUT
NSN4730-00-217-2429
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 401-4S · 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
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES FIRST END IN
•
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED: 0.516 INCHES SECOND END IN
•
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
NOMINAL THREAD SIZE: 0.438 INCHES FIRST END IN
•
CONNECTION TYPE: THREADED INTERNAL TUBE FIRST END
•
CONNECTION STYLE: SWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES FIRST END IN
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED0.516 INCHES SECOND END IN
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
NOMINAL THREAD SIZE0.438 INCHES FIRST END IN
CONNECTION TYPETHREADED INTERNAL TUBE FIRST END
END ITEM IDENTIFICATION2320-01-097-0248,2320-01-097-0249,2320-01-100-7672,2320-01-097-0260,2320-01-195-7641, HEMTT FAMILY (HEAVY EXPANDED MOBILITY TACTICAL TRUCKS)
CONNECTION STYLESWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
MATERIALSTEEL OVERALL
FURNISHED ITEMS AND QUANTITY1 HOSE COUPLING NUT
THREAD CLASS2B FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
3234Interchangeable
interchangeable cross-reference
interchangeable
3234-00Interchangeable
interchangeable cross-reference
interchangeable
2252078Interchangeable
interchangeable cross-reference
interchangeable
READINESS SPARE PART ITEMInterchangeable
interchangeable cross-reference
interchangeable
3305-T2Interchangeable
interchangeable cross-reference
interchangeable
7350874Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 401-4S?
401-4S is a ADAPTER,STRAIGHT,TUBE TO HOSE.
What parts can replace 401-4S?
There are 7 known substitutes for 401-4S: 3234, 3234-00, 2252078 and 4 more. Substitute compatibility should be verified for your specific system.
Is 401-4S still available?
401-4S 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