4730-01-343-3452 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Features
Restrictor,fluid Flow — FSC 4730
Length: 0.125 INCHES NOMINAL IN
Thread Provision: UNTHREADED LOCATION NOT OTHERWISE SPECIFIED
Design Type: PLATE
Material Document and Classification: MIL-C-15726, COMP 70-30, HARD MIL SPEC SINGLE MATERIAL RESPONSE
Outside Diameter: 3.173 INCHES MINIMUM AND 3.177 INCHES MAXIMUM IN
Material: COPPER ALLOY 715
Orifice Diameter: 2.250 INCHES NOMINAL IN
Identification
NSN: 4730-01-343-3452
NIIN: 013433452
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
FSG: 47 — Pipe, Tubing, Hose, and Fittings
General Description
The Restrictor,fluid Flow, cataloged under National Stock Number 4730-01-343-3452, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 8 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
MIL-C-15726, COMP 70-30, HARD MIL SPEC SINGLE MATERIAL RESPONSE
Outside Diameter
3.173 INCHES MINIMUM AND 3.177 INCHES MAXIMUM IN
Material
COPPER ALLOY 715
Orifice Diameter
2.250 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items8
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4730-01-377-74952621-561-03 PIECE 68POSSIBLE MATCH
RESTRICTOR,FLUID FLOW
Possible match (shared part number)Electric Boat Corporation Div General Dynamics Electric Boat
4730-01-377-7592845-4864184 PIECE 67POSSIBLE MATCH
RESTRICTOR,FLUID FLOW
Possible match (shared part number)Naval Ship Systems Command
4730-01-468-3381845-4864184 ITEM 131POSSIBLE MATCH
RESTRICTOR,FLUID FLOW
Possible match (shared part number)Naval Ship Systems Command
4730-01-468-3383845-4864184 ITEM 134POSSIBLE MATCH
RESTRICTOR,FLUID FLOW
Possible match (shared part number)Naval Ship Systems Command
5365-01-477-6407845-4864184 ITEM 132POSSIBLE MATCH
SPACER,SLEEVE
Possible match (shared part number)Naval Ship Systems Command
5365-01-477-6622845-4864184 ITEM 137POSSIBLE MATCH
SPACER,SLEEVE
Possible match (shared part number)Naval Ship Systems Command
5365-01-477-7629845-4864184 ITEM 135POSSIBLE MATCH
SPACER,SLEEVE
Possible match (shared part number)Naval Ship Systems Command
5365-01-477-7654014777654-02080POSSIBLE MATCH
SPACER,SLEEVE
Possible match (shared part number)Dla Aviation Engineering Div Department of Defense
Cross-Reference Index
No manufacturer part numbers on file in the U.S. Government catalog.
Reference documents
Reference
Meaning
845-4864184 PIECE 60
5/2Secondary reference
U.S. Government activity
2621-561-03
D/9Drawing number reference only
U.S. Government activity
845-4864184
D/9Drawing number reference only
U.S. Government activity
2621-561-03 PIECE 60
3/2Design control — primary reference
U.S. Government activity
Related Parts
4730-01-377-7495POSSIBLE MATCH
RESTRICTOR,FLUID FLOW
2621-561-03 PIECE 68
4730-01-377-7592POSSIBLE MATCH
RESTRICTOR,FLUID FLOW
845-4864184 PIECE 67
4730-01-468-3381POSSIBLE MATCH
RESTRICTOR,FLUID FLOW
845-4864184 ITEM 131
4730-01-468-3383POSSIBLE MATCH
RESTRICTOR,FLUID FLOW
845-4864184 ITEM 134
5365-01-477-6407POSSIBLE MATCH
SPACER,SLEEVE
845-4864184 ITEM 132
5365-01-477-6622POSSIBLE MATCH
SPACER,SLEEVE
845-4864184 ITEM 137
5365-01-477-7629POSSIBLE MATCH
SPACER,SLEEVE
845-4864184 ITEM 135
5365-01-477-7654POSSIBLE MATCH
SPACER,SLEEVE
014777654-02080
Frequently Asked Questions
What is NSN 4730-01-343-3452?
NSN 4730-01-343-3452 is a Restrictor,fluid Flow, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
What NSN replaces 4730-01-343-3452?
8 possible matches (shared part number, not a government interchangeability claim): 4730-01-377-7495, 4730-01-377-7592, 4730-01-468-3381. Verify interchangeability with system specifications before substitution.
What are the specifications of 4730-01-343-3452?
Key specifications for 4730-01-343-3452: Length: 0.125 INCHES NOMINAL IN; Thread Provision: UNTHREADED LOCATION NOT OTHERWISE SPECIFIED; Design Type: PLATE; Material Document and Classification: MIL-C-15726, COMP 70-30, HARD MIL SPEC SINGLE MATERIAL RESPONSE. 7 specifications are documented in the U.S. Government catalog.
Is NSN 4730-01-343-3452 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.