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Technical Data Sheet
PartsTable / COMPONENT / 21329-21
21329-21 ✓ 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,FLUID FLOW is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, design_type: TUBULAR, special_features: CLEAN MATING THREADS OF RESISTOR, thread_provision: THREADED LOCATION NOT OTHERWISE SPECIFIED, end_item_identification: SEAWOLF CLASS SSN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-413-9602, 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
21329-21
NSN: 4730-01-413-9602
FSC: 4730
CAGE: 78062 — SARGENT AEROSPACE & DEFENSE, LLC DBA SARGENT CONTROLS & AEROSPACE DIV SARGENT CONTROLS & AEROSPACE (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
design_typeTUBULAR
special_featuresCLEAN MATING THREADS OF RESISTOR
thread_provisionTHREADED LOCATION NOT OTHERWISE SPECIFIED
end_item_identificationSEAWOLF CLASS SSN
NSN4730-01-413-9602
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 21329-21 · 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
•
THREAD PROVISION: THREADED LOCATION NOT OTHERWISE SPECIFIED
•
DESIGN TYPE: TUBULAR
•
MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS (FLIS)
THREAD PROVISIONTHREADED LOCATION NOT OTHERWISE SPECIFIED
END ITEM IDENTIFICATIONSEAWOLF CLASS SSN
DESIGN TYPETUBULAR
MATERIALSTEEL CORROSION RESISTING
SPECIAL FEATURESCLEAN MATING THREADS OF RESISTOR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
B11-32Interchangeable
interchangeable cross-reference
interchangeable
21-329Interchangeable
interchangeable cross-reference
interchangeable
S6140-61105Interchangeable
interchangeable cross-reference
interchangeable
5101-78Interchangeable
interchangeable cross-reference
interchangeable
232-0030-00Interchangeable
interchangeable cross-reference
interchangeable
21330-1007-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21329-21?
21329-21 is a RESTRICTOR,FLUID FLOW.
What parts can replace 21329-21?
There are 19 known substitutes for 21329-21: B11-32, 21-329, S6140-61105 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21329-21?
21329-21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-413-9602. 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