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Technical Data Sheet
PartsTable / COMPONENT / 662-FS-06X04
662-FS-06X04 ✓ 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 NUT,TUBE COUPLING,REDUCING is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 360 OVERALL, nut_style: TUBE COUPLING, nut_height: 0.690 INCHES NOMINAL IN, thread_class: 2B, thread_series: UNF, 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 4730-01-263-6395, 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
662-FS-06X04
NSN: 4730-01-263-6395
FSC: 4730
CAGE: 30327 — IMPERIAL (USA)
SPECIFICATIONS
materialCOPPER ALLOY 360 OVERALL
nut_styleTUBE COUPLING
nut_height0.690 INCHES NOMINAL IN
thread_class2B
thread_seriesUNF
thread_directionRIGHT-HAND
nominal_thread_size0.562 INCHES IN
thread_quantity_per_inch18
nominal_tube_outside_diameter0.250 INCHES IN
NSN4730-01-263-6395
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 662-FS-06X04 · 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
•
NUT HEIGHT: 0.690 INCHES NOMINAL IN
•
NOMINAL TUBE OUTSIDE DIAMETER: 0.250 INCHES IN
•
NOMINAL THREAD SIZE: 0.562 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
•
MATERIAL: COPPER ALLOY 360 OVERALL
•
THREAD SERIES: UNF
•
THREAD QUANTITY PER INCH: 18
•
THREAD CLASS: 2B
TECHNICAL CHARACTERISTICS (FLIS)
NUT HEIGHT0.690 INCHES NOMINAL IN
NOMINAL TUBE OUTSIDE DIAMETER0.250 INCHES IN
NOMINAL THREAD SIZE0.562 INCHES IN
THREAD DIRECTIONRIGHT-HAND
MATERIALCOPPER ALLOY 360 OVERALL
THREAD SERIESUNF
THREAD QUANTITY PER INCH18
THREAD CLASS2B
NUT STYLETUBE COUPLING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
7T75SInterchangeable
interchangeable cross-reference
interchangeable
342C584H01Interchangeable
interchangeable cross-reference
interchangeable
45-02Interchangeable
interchangeable cross-reference
interchangeable
AN3144-4502Interchangeable
interchangeable cross-reference
interchangeable
618184Interchangeable
interchangeable cross-reference
interchangeable
LA-361-18Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 662-FS-06X04?
662-FS-06X04 is a NUT,TUBE COUPLING,REDUCING.
What parts can replace 662-FS-06X04?
There are 22 known substitutes for 662-FS-06X04: 7T75S, 342C584H01, 45-02 and 19 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 662-FS-06X04?
662-FS-06X04 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-263-6395. 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