PartsTable
Technical Data Sheet
403590-3 ✓ 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: 37.0 DEGREES FIRST END, thread_class: 2B FIRST END, connection_type: THREADED EXTERNAL HOSE GRIPPING SECOND END, connection_style: SWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END, nominal_thread_size: 0.625 INCHES FIRST END 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 4730-01-107-4211, 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
403590-3
NSN: 4730-01-107-4211
FSC: 4730
CAGE: 28835 — HOBART BROS CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
seat_angle37.0 DEGREES FIRST END
thread_class2B FIRST END
connection_typeTHREADED EXTERNAL HOSE GRIPPING SECOND END
connection_styleSWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
nominal_thread_size0.625 INCHES FIRST END IN
nominal_overall_length1.860 INCHES IN
thread_series_designatorUNF FIRST END
nominal_inside_diameter_hose_accommodated0.312 INCHES SECOND END IN
nominal_outside_diameter_hose_accommodated0.610 INCHES SECOND END IN
nominal_outside_diameter_tube_accommodated0.375 INCHES FIRST END IN
NSN4730-01-107-4211
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 403590-3 · 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 OVERALL LENGTH: 1.860 INCHES IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.375 INCHES FIRST END IN
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED: 0.610 INCHES SECOND END IN
CONNECTION TYPE: THREADED INTERNAL TUBE FIRST END
CONNECTION STYLE: GRIPPING NIPPLE (NOSE) SECOND END
THREAD SERIES DESIGNATOR: UNF FIRST END
NOMINAL THREAD SIZE: 0.625 INCHES FIRST END IN
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL OVERALL LENGTH1.860 INCHES IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.375 INCHES FIRST END IN
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED0.610 INCHES SECOND END IN
CONNECTION TYPETHREADED INTERNAL TUBE FIRST END
CONNECTION STYLEGRIPPING NIPPLE (NOSE) SECOND END
CONNECTION STYLESWIVEL NUT, FLARE (TUBE) STYLE 3 OPTIONAL END FIRST END
THREAD SERIES DESIGNATORUNF FIRST END
NOMINAL THREAD SIZE0.625 INCHES FIRST END IN
MATERIALSTEEL OVERALL
THREAD CLASS2B FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
4730PL1869422Interchangeable
interchangeable cross-reference
interchangeable
AN792-5Interchangeable
interchangeable cross-reference
interchangeable
20620-5-5Interchangeable
interchangeable cross-reference
interchangeable
7115-6SInterchangeable
Same NIIN cross-reference
interchangeable
403590Interchangeable
Same NIIN cross-reference
interchangeable
20823-6-6Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 403590-3?
403590-3 is a ADAPTER,STRAIGHT,TUBE TO HOSE.
What parts can replace 403590-3?
There are 6 known substitutes for 403590-3: 4730PL1869422, AN792-5, 20620-5-5 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 403590-3?
403590-3 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-107-4211. This indicates validated use in U.S. government and defense supply chains.
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