PartsTable
Technical Data Sheet
4-4721-32 ✓ 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 CONNECTING LINK,RIGID is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 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, operating_pressure: 1250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-122-5659, 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
4-4721-32
NSN: 4730-00-122-5659
FSC: 4730
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
materialNICKEL ALLOY 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
operating_pressure1250.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size2.500 INCHES FIRST END IN
maximum_operating_temp300.0 FAHRENHEIT SINGLE RESPONSE DEGF
nominal_overall_length5.900 INCHES IN
end_item_identificationFGN CVN 68 CLASS REACTOR FILL AUXILIARY SYSTEM
thread_quantity_per_inch12 FIRST END
thread_series_designatorUN FIRST END
NSN4730-00-122-5659
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4-4721-32 · 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
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
CRITICALITY CODE JUSTIFICATION: ZZZY
TECHNICAL CHARACTERISTICS (FLIS)
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
CRITICALITY CODE JUSTIFICATIONZZZY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
4472-132Interchangeable
interchangeable cross-reference
interchangeable
30233-32-32B6Interchangeable
interchangeable cross-reference
interchangeable
M24135/1A-2000-32Interchangeable
interchangeable cross-reference
interchangeable
20630-32-32NAL1Interchangeable
Same NIIN cross-reference
interchangeable
GROUP I TYPE A SIZE 2-32L1Interchangeable
Same NIIN cross-reference
interchangeable
4-4721-32L1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4-4721-32?
4-4721-32 is a CONNECTING LINK,RIGID.
What parts can replace 4-4721-32?
There are 13 known substitutes for 4-4721-32: 4472-132, 30233-32-32B6, M24135/1A-2000-32 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4-4721-32?
4-4721-32 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-122-5659. This indicates validated use in U.S. government and defense supply chains.
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