NSN 4730-01-623-9438 · NIIN 016239438 · Part number LD251-0001-4340
The Boeing Company Div Legacy Am&m · FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings · CAGE 43999
Government record, cited
NSN 4730-01-623-9438 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-623-9438. Manufacturer of record part number: LD251-0001-4340.
Also searched as4730-01-623-9438 ·
4730016239438 ·
NIIN 016239438 ·
01-623-9438 ·
FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · CAGE 43999 · LD251-0001-4340 · LD251-0001
4730-01-623-9438 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Features
Restrictor,fluid Flow — FSC 4730
Length: 0.032 INCHES NOMINAL IN
Thread Provision: UNTHREADED SINGLE PROVISION
Design Type: PLATE
Outside Diameter: 1.343 INCHES NOMINAL IN
Surface Treatment: ANODIZE
Material: ALUMINUM ALLOY 2024
Orifice Diameter: 0.625 INCHES NOMINAL IN
Identification
NSN: 4730-01-623-9438
NIIN: 016239438
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
FSG: 47 — Pipe, Tubing, Hose, and Fittings
Primary part number: LD251-0001-4340
Manufacturer: The Boeing Company Div Legacy Am&m
General Description
The Restrictor,fluid Flow, cataloged under National Stock Number 4730-01-623-9438, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is The Boeing Company Div Legacy Am&m. Government technical data includes 7 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 4 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
NSN 4730-01-623-9438 is a Restrictor,fluid Flow, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
What part numbers are listed for NSN 4730-01-623-9438?
NSN 4730-01-623-9438 has 1 manufacturer part number on file: LD251-0001-4340 (The Boeing Company Div Legacy Am&m).
What NSN replaces 4730-01-623-9438?
4 possible matches (shared part number, not a government interchangeability claim): 4730-01-627-5880, 4730-01-627-5882, 4730-01-627-5884. Verify interchangeability with system specifications before substitution.
What are the specifications of LD251-0001-4340?
Key specifications for LD251-0001-4340: Length: 0.032 INCHES NOMINAL IN; Thread Provision: UNTHREADED SINGLE PROVISION; Design Type: PLATE; Outside Diameter: 1.343 INCHES NOMINAL IN. 7 specifications are documented in the U.S. Government catalog.
Is NSN 4730-01-623-9438 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.