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2312620 — RESTRICTOR,FLUID FLOW

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

2312620: RESTRICTOR,FLUID FLOW.

The RESTRICTOR,FLUID FLOW is a the manufacturer industrial component. Key specifications include length: 3.750 INCHES NOMINAL IN, material: STEEL CORROSION RESISTING, design_type: TUBULAR, thread_class: 3B LOCATION NOT OTHERWISE SPECIFIED, thread_length: 0.625 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN, thread_series: UNF LOCATION NOT OTHERWISE SPECIFIED. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-421-3231, 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
2312620
NSN: 4730-00-421-3231
NIINs: 004213231, 010963469, 011928504, 011928505, 011940326
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 10001 — NAVAIR AND NAVSEA MANAGED ORIGINAL DESIGN ACTIVITY DWG NOT MATERIAL/PARTS SUPPLIER (USA)
SPECIFICATIONS
length3.750 INCHES NOMINAL IN
materialSTEEL CORROSION RESISTING
design_typeTUBULAR
thread_class3B LOCATION NOT OTHERWISE SPECIFIED
thread_length0.625 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
thread_seriesUNF LOCATION NOT OTHERWISE SPECIFIED
orifice_diameter1.000 INCHES NOMINAL IN
outside_diameter1.625 INCHES NOMINAL IN
thread_directionRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
thread_provisionUNTHREADED LOCATION NOT OTHERWISE SPECIFIED
surface_treatmentPASSIVATE
thread_size_designator7/8-14 LOCATION NOT OTHERWISE SPECIFIED
NSN4730-00-421-3231
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 2312620 · 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: 3.375 INCHES NOMINAL IN
•
THREAD PROVISION: THREADED LOCATION NOT OTHERWISE SPECIFIED
•
DESIGN TYPE: TUBULAR, HEX SHAPE
•
THREAD SERIES: UNF SECOND PROVISION
•
THREAD LENGTH: 0.469 INCHES NOMINAL FIRST PROVISION IN
•
HOSE/TUBE SIZE FOR WHICH DESIGNED: 318 IN. TUBE OD IN
TECHNICAL CHARACTERISTICS
LENGTH3.375 INCHES NOMINAL IN
THREAD PROVISIONTHREADED LOCATION NOT OTHERWISE SPECIFIED
DESIGN TYPETUBULAR, HEX SHAPE
THREAD SERIESUNF SECOND PROVISION
THREAD SERIESUNF FIRST PROVISION
THREAD LENGTH0.469 INCHES NOMINAL FIRST PROVISION IN
THREAD LENGTH0.469 INCHES NOMINAL SECOND PROVISION IN
HOSE/TUBE SIZE FOR WHICH DESIGNED318 IN. TUBE OD IN
OUTSIDE DIAMETER1.375 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND FIRST PROVISION
SUBSTITUTES & CROSS-REFERENCES 3
Q642-05-1-0Reference document
Same NSN cross-reference
Reference document — Secondary reference
R121W6-1.0Reference document
Same NSN cross-reference
Reference document — Secondary reference
2312620-3Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
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 2312620?
2312620 is a RESTRICTOR,FLUID FLOW.
What parts can replace 2312620?
There are 3 known substitutes for 2312620: Q642-05-1-0, R121W6-1.0, 2312620-3. Substitute compatibility should be verified for your specific system.
What is the NSN for 2312620?
2312620 is cataloged in the U.S. Government catalog under NSN 4730-00-421-3231. 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.