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Technical Data Sheet
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4328540 — RESTRICTOR,FLUID FLOW

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

4328540: RESTRICTOR,FLUID FLOW.

The RESTRICTOR,FLUID FLOW is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 4730-01-319-8051, 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
4328540
NSN: 4730-01-319-8051
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 21119 — EVINRUDE MOTORS PRODUCT GROUP OF OUTBOARD MARINE CORP (USA)
SPECIFICATIONS
Part Number4328540
NSN4730-01-319-8051
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4328540 · 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
SUBSTITUTES & CROSS-REFERENCES 1
328540Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 4328540?
4328540 is a RESTRICTOR,FLUID FLOW.
What parts can replace 4328540?
There is 1 known substitute for 4328540: 328540. Substitute compatibility should be verified for your specific system.
What is the NSN for 4328540?
4328540 is cataloged in the U.S. Government catalog under NSN 4730-01-319-8051. This indicates validated use in U.S. government and defense supply chains.
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