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310548 — RESTRICTOR,FLUID FLOW

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

310548: RESTRICTOR,FLUID FLOW.

The RESTRICTOR,FLUID FLOW is a the manufacturer industrial component. Key specifications include length: 0.165 INCHES NOMINAL IN, material: STEEL, design_type: TUBULAR, thread_class: 3A LOCATION NOT OTHERWISE SPECIFIED A, thread_length: 0.130 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, thread_series: NF FIRST PROVISION. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-348-8902, 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
310548
NSN: 4730-00-348-8902
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 77445 — RTX CORPORATION DBA PRATT & WHITNEY DIV PRATT &WHITNEY (USA)
SPECIFICATIONS
length0.165 INCHES NOMINAL IN
materialSTEEL
design_typeTUBULAR
thread_class3A LOCATION NOT OTHERWISE SPECIFIED A
thread_length0.130 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
thread_seriesNF FIRST PROVISION
orifice_diameter0.084 INCHES NOMINAL IN
outside_diameter0.216 INCHES NOMINAL IN
thread_directionRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
thread_provisionTHREADED LOCATION NOT OTHERWISE SPECIFIED
thread_size_designator12-28 /0.216 IN./ LOCATION NOT OTHERWISE SPECIFIED IN
NSN4730-00-348-8902
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 310548 · 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: 0.165 INCHES NOMINAL IN
•
THREAD PROVISION: THREADED LOCATION NOT OTHERWISE SPECIFIED
•
DESIGN TYPE: TUBULAR
•
THREAD SERIES: NF FIRST PROVISION
•
THREAD LENGTH: 0.130 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
OUTSIDE DIAMETER: 0.216 INCHES NOMINAL IN
•
THREAD DIRECTION: RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
•
THREAD SIZE DESIGNATOR: 12-28 /0.216 IN./ LOCATION NOT OTHERWISE SPECIFIED IN
TECHNICAL CHARACTERISTICS
LENGTH0.165 INCHES NOMINAL IN
THREAD PROVISIONTHREADED LOCATION NOT OTHERWISE SPECIFIED
DESIGN TYPETUBULAR
THREAD SERIESNF FIRST PROVISION
THREAD LENGTH0.130 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
OUTSIDE DIAMETER0.216 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
THREAD SIZE DESIGNATOR12-28 /0.216 IN./ LOCATION NOT OTHERWISE SPECIFIED IN
THREAD CLASS3A LOCATION NOT OTHERWISE SPECIFIED A
MATERIALSTEEL
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: Terminal item — no further procurement; issued until stock is exhaustedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 310548?
310548 is a RESTRICTOR,FLUID FLOW.
What is the NSN for 310548?
310548 is cataloged in the U.S. Government catalog under NSN 4730-00-348-8902. 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.