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21128-32 — COUPLING,TUBE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

21128-32: COUPLING,TUBE.

The COUPLING,TUBE is a the manufacturer industrial component. Key specifications include end_item_identification: VALVE,DRNTL C. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-407-0797, 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
21128-32
NSN: 4730-01-407-0797
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 78062 — SARGENT AEROSPACE & DEFENSE, LLC DBA SARGENT CONTROLS & AEROSPACE DIV SARGENT CONTROLS & AEROSPACE (USA)
SPECIFICATIONS
end_item_identificationVALVE,DRNTL C
NSN4730-01-407-0797
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 21128-32 · 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
TECHNICAL CHARACTERISTICS
END ITEM IDENTIFICATIONVALVE,DRNTL C
SUBSTITUTES & CROSS-REFERENCES 8
SAE-J24714Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
21837 FIND 31Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
21123 FUND 33Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
52122 FIND 42Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
21103-50Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
SAE J24714-012S-AReference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 21128-32?
21128-32 is a COUPLING,TUBE.
What parts can replace 21128-32?
There are 8 known substitutes for 21128-32: SAE-J24714, 21837 FIND 31, 21123 FUND 33 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21128-32?
21128-32 is cataloged in the U.S. Government catalog under NSN 4730-01-407-0797. This indicates validated use in U.S. government and defense supply chains.
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