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3255739-9 — RESTRICTOR,FLUID FLOW

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

3255739-9: RESTRICTOR,FLUID FLOW.

The RESTRICTOR,FLUID FLOW is a the manufacturer industrial component. Key specifications include design_type: TUBULAR, orifice_diameter: 0.108 INCHES NOMINAL IN, special_features: MARK HP53, thread_provision: UNTHREADED LOCATION NOT OTHERWISE SPECIFIED, end_item_identification: COOLER,WATER,ELECTRONIC EQUIP, hose/tube_size_for_which_designed: 1/4 PIPE SOCKET. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-319-3313, 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
3255739-9
NSN: 4730-01-319-3313
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
design_typeTUBULAR
orifice_diameter0.108 INCHES NOMINAL IN
special_featuresMARK HP53
thread_provisionUNTHREADED LOCATION NOT OTHERWISE SPECIFIED
end_item_identificationCOOLER,WATER,ELECTRONIC EQUIP
hose/tube_size_for_which_designed1/4 PIPE SOCKET
NSN4730-01-319-3313
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3255739-9 · 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: UNTHREADED LOCATION NOT OTHERWISE SPECIFIED
•
DESIGN TYPE: TUBULAR
•
HOSE/TUBE SIZE FOR WHICH DESIGNED: 1/4 PIPE SOCKET
•
ORIFICE DIAMETER: 0.108 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
THREAD PROVISIONUNTHREADED LOCATION NOT OTHERWISE SPECIFIED
DESIGN TYPETUBULAR
HOSE/TUBE SIZE FOR WHICH DESIGNED1/4 PIPE SOCKET
SPECIAL FEATURESMARK HP53
END ITEM IDENTIFICATIONCOOLER,WATER,ELECTRONIC EQUIP
ORIFICE DIAMETER0.108 INCHES NOMINAL IN
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3255739-9?
3255739-9 is a RESTRICTOR,FLUID FLOW.
What is the NSN for 3255739-9?
3255739-9 is cataloged in the U.S. Government catalog under NSN 4730-01-319-3313. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.