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540905-97 — RESTRICTOR UNIT,FLUID FLOW

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

540905-97: RESTRICTOR UNIT,FLUID FLOW.

The RESTRICTOR UNIT,FLUID FLOW is a the manufacturer industrial component. Key specifications include diameter: 0.496 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN, material: STEEL CORROSION RESISTING SCREENING, design_type: STRAIGHT, overall_length: 1.560 INCHES NOMINAL IN, pressure_rating: 300.0 POUNDS PER SQUARE INCH (PSI) MINIMUM AND 350.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS, orifice_diameter: 0.023 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-654-2347, 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
540905-97
NSN: 4730-00-654-2347
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 73030 — HAMILTON SUNDSTRAND CORPORATION DBA COLLINS AEROSPACE (USA)
SPECIFICATIONS
diameter0.496 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN
materialSTEEL CORROSION RESISTING SCREENING
design_typeSTRAIGHT
overall_length1.560 INCHES NOMINAL IN
pressure_rating300.0 POUNDS PER SQUARE INCH (PSI) MINIMUM AND 350.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
orifice_diameter0.023 INCHES NOMINAL IN
end_connection_similarityNOT IDENTICAL
strainer_type_and_quantity2 SCREEN
material_document_and_classificationAMS 5639,PER UNITED AIRCRAFT SPEC NO HS 178 ASSN STD SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
NSN4730-00-654-2347
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 540905-97 · 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
•
PRESSURE RATING: 300.0 POUNDS PER SQUARE INCH (PSI) MINIMUM AND 350.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
•
STRAINER TYPE AND QUANTITY: 2 SCREEN
•
DESIGN TYPE: STRAIGHT
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5639,PER UNITED AIRCRAFT SPEC NO HS 178 ASSN STD SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
•
DIAMETER: 0.496 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN
•
MATERIAL: STEEL CORROSION RESISTING SCREENING
TECHNICAL CHARACTERISTICS
PRESSURE RATING300.0 POUNDS PER SQUARE INCH (PSI) MINIMUM AND 350.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
STRAINER TYPE AND QUANTITY2 SCREEN
DESIGN TYPESTRAIGHT
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5639,PER UNITED AIRCRAFT SPEC NO HS 178 ASSN STD SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
DIAMETER0.496 INCHES MINIMUM AND 0.498 INCHES MAXIMUM IN
OVERALL LENGTH1.560 INCHES NOMINAL IN
MATERIALSTEEL CORROSION RESISTING SCREENING
MATERIALSTEEL COMP 304 BODY
ORIFICE DIAMETER0.023 INCHES NOMINAL IN
END CONNECTION SIMILARITYNOT IDENTICAL
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
Demilitarization required — mutilation
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FREQUENTLY ASKED QUESTIONS
What is 540905-97?
540905-97 is a RESTRICTOR UNIT,FLUID FLOW.
What is the NSN for 540905-97?
540905-97 is cataloged in the U.S. Government catalog under NSN 4730-00-654-2347. This indicates validated use in U.S. government and defense supply chains.
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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.