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5001057 — RESTRICTOR,FLUID FLOW

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

5001057: RESTRICTOR,FLUID FLOW.

The RESTRICTOR,FLUID FLOW is a the manufacturer industrial component. Key specifications include length: 0.250 INCHES NOMINAL IN, material: STEEL COMP 316, design_type: PLATE, orifice_diameter: 0.055 INCHES NOMINAL IN, outside_diameter: 0.750 INCHES NOMINAL IN, thread_provision: UNTHREADED LOCATION NOT OTHERWISE SPECIFIED. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-383-5255, 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
5001057
NSN: 4730-01-383-5255
NIINs: 013835255, 014674138
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
length0.250 INCHES NOMINAL IN
materialSTEEL COMP 316
design_typePLATE
orifice_diameter0.055 INCHES NOMINAL IN
outside_diameter0.750 INCHES NOMINAL IN
thread_provisionUNTHREADED LOCATION NOT OTHERWISE SPECIFIED
end_item_identificationSUBMARINE ENGINEERING AND DISEL SYSTEMS
NSN4730-01-383-5255
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 5001057 · 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: 0.250 INCHES NOMINAL IN
•
THREAD PROVISION: UNTHREADED LOCATION NOT OTHERWISE SPECIFIED
•
DESIGN TYPE: CONCAVE DISK
•
OUTSIDE DIAMETER: 0.750 INCHES NOMINAL IN
•
MATERIAL: STEEL CORROSION RESISTING
•
ORIFICE DIAMETER: 0.040 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
LENGTH0.250 INCHES NOMINAL IN
THREAD PROVISIONUNTHREADED LOCATION NOT OTHERWISE SPECIFIED
DESIGN TYPECONCAVE DISK
OUTSIDE DIAMETER0.750 INCHES NOMINAL IN
MATERIALSTEEL CORROSION RESISTING
ORIFICE DIAMETER0.040 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
803-5001057 PIEReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Terminal item — stock exhausted; no further procurementNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 5001057?
5001057 is a RESTRICTOR,FLUID FLOW.
What parts can replace 5001057?
There is 1 known substitute for 5001057: 803-5001057 PIE. Substitute compatibility should be verified for your specific system.
What is the NSN for 5001057?
5001057 is cataloged in the U.S. Government catalog under NSN 4730-01-383-5255. 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.