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UA540159-413 — RESTRICTOR UNIT,FLUID FLOW

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

UA540159-413: RESTRICTOR UNIT,FLUID FLOW.

The RESTRICTOR UNIT,FLUID FLOW is a the manufacturer industrial component. Key specifications include length: 1.062 INCHES NOMINAL IN, diameter: 0.174 INCHES NOMINAL IN, material: ALUMINUM ALLOY, design_type: TUBULAR, thread_class: 3A THIRD CONNECTION A, thread_length: 0.453 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-368-1564, 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
UA540159-413
NSN: 4730-01-368-1564
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 78943 — TRIUMPH THERMAL SYSTEMS, LLC (USA)
SPECIFICATIONS
length1.062 INCHES NOMINAL IN
diameter0.174 INCHES NOMINAL IN
materialALUMINUM ALLOY
design_typeTUBULAR
thread_class3A THIRD CONNECTION A
thread_length0.453 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
thread_seriesUNIFIED NATIONAL JOINT FINE (UNJF) LOCATION NOT OTHERWISE SPECIFIED
overall_length1.062 INCHES NOMINAL IN
orifice_diameter0.022 INCHES NOMINAL IN
outside_diameter0.250 INCHES NOMINAL IN
special_featuresMATERIAL 0.688 AA6061-T6 HEX STK.; ANODIZE PER MIL-A-8625 TYPE 2,CLASS 2,BLUE; CHEM FILM WITH IRIDITE 14.2 PER MIL-C-5541 CLASS 3
thread_directionRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
NSN4730-01-368-1564
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: UA540159-413 · 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 2
UA540159Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
DAA3283P001-413Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is UA540159-413?
UA540159-413 is a RESTRICTOR UNIT,FLUID FLOW.
What parts can replace UA540159-413?
There are 2 known substitutes for UA540159-413: UA540159, DAA3283P001-413. Substitute compatibility should be verified for your specific system.
What is the NSN for UA540159-413?
UA540159-413 is cataloged in the U.S. Government catalog under NSN 4730-01-368-1564. 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.