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74A831240-2059 — RESTRICTOR,FLUID FLOW

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

74A831240-2059: RESTRICTOR,FLUID FLOW.

The RESTRICTOR,FLUID FLOW is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY, orifice_diameter: 1.125 INCHES NOMINAL IN, outside_diameter: 2.000 INCHES NOMINAL IN, special_features: MATERIAL IAW QQ-A-250/8, COMP 5052, COND O., thread_provision: UNTHREADED FIRST PROVISION, end_item_identification: ENVIRONMENTAL CONTROL; F/A-18 E/F. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-562-8447, 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
74A831240-2059
NSN: 4730-01-562-8447
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialCOPPER ALLOY
orifice_diameter1.125 INCHES NOMINAL IN
outside_diameter2.000 INCHES NOMINAL IN
special_featuresMATERIAL IAW QQ-A-250/8, COMP 5052, COND O.
thread_provisionUNTHREADED FIRST PROVISION
end_item_identificationENVIRONMENTAL CONTROL; F/A-18 E/F
part_name_assigned_by_controlling_agency(INAVY)DP RESTRICTOR
NSN4730-01-562-8447
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 74A831240-2059 · 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
•
THREAD PROVISION: UNTHREADED FIRST PROVISION
•
OUTSIDE DIAMETER: 2.000 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY
•
ORIFICE DIAMETER: 1.125 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
THREAD PROVISIONUNTHREADED FIRST PROVISION
OUTSIDE DIAMETER2.000 INCHES NOMINAL IN
SPECIAL FEATURESMATERIAL IAW QQ-A-250/8, COMP 5052, COND O.
PART NAME ASSIGNED BY CONTROLLING AGENCY(INAVY)DP RESTRICTOR
END ITEM IDENTIFICATIONENVIRONMENTAL CONTROL; F/A-18 E/F
MATERIALCOPPER ALLOY
ORIFICE DIAMETER1.125 INCHES NOMINAL 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: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 74A831240-2059?
74A831240-2059 is a RESTRICTOR,FLUID FLOW.
What is the NSN for 74A831240-2059?
74A831240-2059 is cataloged in the U.S. Government catalog under NSN 4730-01-562-8447. 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.