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Technical Data Sheet
PartsTable / COMPONENT / 21066-11
21066-11 ✓ 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, special_features: 300 CRES SS; PILOT VALVE ASSEMBLY, end_item_identification: SUBMARINE; 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 4730-01-415-6593, 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
21066-11
NSN: 4730-01-415-6593
FSC: 4730
CAGE: 78062 — SARGENT AEROSPACE & DEFENSE, LLC DBA SARGENT CONTROLS & AEROSPACE DIV SARGENT CONTROLS & AEROSPACE (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
special_features300 CRES SS; PILOT VALVE ASSEMBLY
end_item_identificationSUBMARINE; SEAWOLF CLASS SSN
NSN4730-01-415-6593
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 21066-11 · 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
•
MATERIAL: STEEL CORROSION RESISTING
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL CORROSION RESISTING
SPECIAL FEATURES300 CRES SS; PILOT VALVE ASSEMBLY
END ITEM IDENTIFICATIONSUBMARINE; SEAWOLF CLASS SSN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
00167277Interchangeable
interchangeable cross-reference
interchangeable
L2131Interchangeable
interchangeable cross-reference
interchangeable
21066Interchangeable
interchangeable cross-reference
interchangeable
4171302-82Interchangeable
interchangeable cross-reference
interchangeable
RC32GF182FInterchangeable
interchangeable cross-reference
interchangeable
R8314Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21066-11?
21066-11 is a RESTRICTOR,FLUID FLOW.
What parts can replace 21066-11?
There are 20 known substitutes for 21066-11: 00167277, L2131, 21066 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21066-11?
21066-11 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-415-6593. 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