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373565-3 — RESTRICTOR,FLUID FLOW

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

373565-3: RESTRICTOR,FLUID FLOW.

The RESTRICTOR,FLUID FLOW is a the manufacturer industrial component. Key specifications include length: 1.310 INCHES MINIMUM AND 1.330 INCHES MAXIMUM IN, design_type: TUBULAR, thread_length: 0.770 INCHES MAXIMUM SECOND PROVISION IN, orifice_diameter: 0.555 INCHES MINIMUM AND 0.557 INCHES MAXIMUM IN, outside_diameter: 5.324 INCHES MINIMUM AND 5.334 INCHES MAXIMUM IN, criticality_code_justification: APGF. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-008-5355, 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
373565-3
NSN: 4730-00-008-5355
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 98897 — LOCKHEED MARTIN CORP (USA)
SPECIFICATIONS
length1.310 INCHES MINIMUM AND 1.330 INCHES MAXIMUM IN
design_typeTUBULAR
thread_length0.770 INCHES MAXIMUM SECOND PROVISION IN
orifice_diameter0.555 INCHES MINIMUM AND 0.557 INCHES MAXIMUM IN
outside_diameter5.324 INCHES MINIMUM AND 5.334 INCHES MAXIMUM IN
criticality_code_justificationAPGF
NSN4730-00-008-5355
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 373565-3 · 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
•
LENGTH: 1.310 INCHES MINIMUM AND 1.330 INCHES MAXIMUM IN
•
DESIGN TYPE: TUBULAR
•
THREAD LENGTH: 0.750 INCHES MINIMUM FIRST PROVISION IN
•
CRITICALITY CODE JUSTIFICATION: APGF
•
OUTSIDE DIAMETER: 5.324 INCHES MINIMUM AND 5.334 INCHES MAXIMUM IN
•
ORIFICE DIAMETER: 0.555 INCHES MINIMUM AND 0.557 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS
LENGTH1.310 INCHES MINIMUM AND 1.330 INCHES MAXIMUM IN
DESIGN TYPETUBULAR
THREAD LENGTH0.750 INCHES MINIMUM FIRST PROVISION IN
THREAD LENGTH0.770 INCHES MAXIMUM SECOND PROVISION IN
CRITICALITY CODE JUSTIFICATIONAPGF
OUTSIDE DIAMETER5.324 INCHES MINIMUM AND 5.334 INCHES MAXIMUM IN
ORIFICE DIAMETER0.555 INCHES MINIMUM AND 0.557 INCHES MAXIMUM 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 373565-3?
373565-3 is a RESTRICTOR,FLUID FLOW.
What is the NSN for 373565-3?
373565-3 is cataloged in the U.S. Government catalog under NSN 4730-00-008-5355. 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.