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540905-79 — RESTRICTOR UNIT,FLUID FLOW

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

540905-79: RESTRICTOR UNIT,FLUID FLOW.

The RESTRICTOR UNIT,FLUID FLOW is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY 400 SCREENING, design_type: STRAIGHT, thread_class: 2B LOCATION NOT OTHERWISE SPECIFIED, thread_series: UNF LOCATION NOT OTHERWISE SPECIFIED, overall_length: 1.340 INCHES NOMINAL IN, thread_direction: RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-654-2872, 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
540905-79
NSN: 4730-00-654-2872
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 73030 — HAMILTON SUNDSTRAND CORPORATION DBA COLLINS AEROSPACE (USA)
SPECIFICATIONS
materialNICKEL ALLOY 400 SCREENING
design_typeSTRAIGHT
thread_class2B LOCATION NOT OTHERWISE SPECIFIED
thread_seriesUNF LOCATION NOT OTHERWISE SPECIFIED
overall_length1.340 INCHES NOMINAL IN
thread_directionRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
end_connection_typeTHREADED FEMALE LOCATION NOT OTHERWISE SPECIFIED
thread_size_designator10-32 LOCATION NOT OTHERWISE SPECIFIED
end_connection_similarityNOT IDENTICAL
strainer_type_and_quantity1 SCREEN
material_document_and_classificationAMS 4730 ASSN STD SINGLE MATERIAL RESPONSE SCREENING
NSN4730-00-654-2872
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 540905-79 · 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
•
STRAINER TYPE AND QUANTITY: 1 SCREEN
•
DESIGN TYPE: STRAIGHT
•
THREAD SERIES: UNF LOCATION NOT OTHERWISE SPECIFIED
•
END CONNECTION TYPE: THREADED FEMALE LOCATION NOT OTHERWISE SPECIFIED
•
MATERIAL DOCUMENT AND CLASSIFICATION: AMS 5639,PER UNITED AIRCRAFT SPEC NO HS 178 ASSN STD SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
•
THREAD DIRECTION: RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
TECHNICAL CHARACTERISTICS
STRAINER TYPE AND QUANTITY1 SCREEN
DESIGN TYPESTRAIGHT
THREAD SERIESUNF LOCATION NOT OTHERWISE SPECIFIED
END CONNECTION TYPETHREADED FEMALE LOCATION NOT OTHERWISE SPECIFIED
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5639,PER UNITED AIRCRAFT SPEC NO HS 178 ASSN STD SINGLE MATERIAL RESPONSE LOCATION NOT OTHERWISE SPECIFIED
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 4730 ASSN STD SINGLE MATERIAL RESPONSE SCREENING
OVERALL LENGTH1.340 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
THREAD SIZE DESIGNATOR10-32 LOCATION NOT OTHERWISE SPECIFIED
THREAD CLASS2B LOCATION NOT OTHERWISE SPECIFIED
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 540905-79?
540905-79 is a RESTRICTOR UNIT,FLUID FLOW.
What is the NSN for 540905-79?
540905-79 is cataloged in the U.S. Government catalog under NSN 4730-00-654-2872. 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.