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3122406 — RESTRICTOR,FLUID FLOW

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

3122406: RESTRICTOR,FLUID FLOW.

The RESTRICTOR,FLUID FLOW is a the manufacturer industrial component. Key specifications include material: RUBBER ISOBUTYLENE-ISOPRENE CLASS IIR OVERALL, nut_style: HEXAGON, overall_width: 6.600 INCHES NOMINAL IN, thread_series: UNIFIED NATIONAL COARSE (UNC), overall_length: 24.060 INCHES NOMINAL IN, outside_diameter: 11.000 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-475-2252, 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
3122406
NSN: 4730-01-475-2252
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 69717 — HYDRIL RUBBER OPNS (USA)
SPECIFICATIONS
materialRUBBER ISOBUTYLENE-ISOPRENE CLASS IIR OVERALL
nut_styleHEXAGON
overall_width6.600 INCHES NOMINAL IN
thread_seriesUNIFIED NATIONAL COARSE (UNC)
overall_length24.060 INCHES NOMINAL IN
outside_diameter11.000 INCHES NOMINAL IN
removable_pistonNOT PROVIDED
aperture_diameter8.750 INCHES NOMINAL IN
thread_quantity_per_inch10
cross-sectional_thickness0.125 INCHES NOMINAL IN
cross-sectional_shape_styleSOLID SINGLE OR COMPOSITION
threaded_direct_pressure_connectionNOT PROVIDED
NSN4730-01-475-2252
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3122406 · 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
SUBSTITUTES & CROSS-REFERENCES 3
3122400 ITEM 5Reference document
Same NSN cross-reference
Reference document — Secondary reference
3122399Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
3122399 ITEM 5Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 3122406?
3122406 is a RESTRICTOR,FLUID FLOW.
What parts can replace 3122406?
There are 3 known substitutes for 3122406: 3122400 ITEM 5, 3122399, 3122399 ITEM 5. Substitute compatibility should be verified for your specific system.
What is the NSN for 3122406?
3122406 is cataloged in the U.S. Government catalog under NSN 4730-01-475-2252. 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.