PartsTable TECHNICAL DATA SHEET
NSN 4730-01-137-2989Government record, cited

Restrictor, Fluid Flow4730-01-137-2989

NSN 4730-01-137-2989 · NIIN 011372989 · Part number 146866-2
Lockheed Martin Corp Electronics and Missiles Div · FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings · CAGE 09205
Government record, cited
NSN 4730-01-137-2989 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-137-2989. Manufacturer of record part number: 146866-2.
Also searched as  4730-01-137-2989 · 4730011372989 · NIIN 011372989 · 01-137-2989 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · CAGE 09205 · 146866-2
Nearby stock numbers  ·
Features
  • Restrictor,fluid Flow — FSC 4730
  • Design Type: TUBULAR
  • Outside Diameter: 0.125 INCHES NOMINAL IN
  • Material: STEEL
  • Orifice Diameter: 0.043 INCHES NOMINAL IN
  • 1 manufacturer part number on file
  • Manufacturer of record: Lockheed Martin Corp Electronics and Missiles Div
Identification
  • NSN: 4730-01-137-2989
  • NIIN: 011372989
  • FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
  • FSG: 47 — Pipe, Tubing, Hose, and Fittings
  • Primary part number: 146866-2
  • Manufacturer: Lockheed Martin Corp Electronics and Missiles Div
General Description

The Restrictor,fluid Flow, cataloged under National Stock Number 4730-01-137-2989, 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 Lockheed Martin Corp Electronics and Missiles Div. Government technical data includes 4 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. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-137-2989
Primary Part Number146866-2
Item NameRestrictor,fluid Flow
FSC / FSG4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
ManufacturerLockheed Martin Corp Electronics and Missiles Div
StatusACTIVE
Design TypeTUBULAR
Outside Diameter0.125 INCHES NOMINAL IN
MaterialSTEEL
Orifice Diameter0.043 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
146866-2 PRIMARY Lockheed Martin Corp Electronics and Missiles Div (USA)
No interchangeability data on file.
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
4730-00-000-1895 · Item name not on file
4730-00-000-4289
4730-00-000-4289 · Item name not on file
4730-00-000-4445
4730-00-000-4445 · Item name not on file
4730-00-000-8373
4730-00-000-8373 · Item name not on file
4730-00-000-8897
4730-00-000-8897 · Item name not on file
4730-00-001-0007
4730-00-001-0007 · Item name not on file
4730-00-001-0008
COUPLING,TUBE
4730-00-001-0008
COUPLING,TUBE

Frequently Asked Questions

What is NSN 4730-01-137-2989?

NSN 4730-01-137-2989 is a Restrictor,fluid Flow, manufactured by Lockheed Martin Corp Electronics and Missiles Div, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What part numbers are listed for NSN 4730-01-137-2989?

NSN 4730-01-137-2989 has 1 manufacturer part number on file: 146866-2 (Lockheed Martin Corp Electronics and Missiles Div).

What are the specifications of 146866-2?

Key specifications for 146866-2: Design Type: TUBULAR; Outside Diameter: 0.125 INCHES NOMINAL IN; Material: STEEL; Orifice Diameter: 0.043 INCHES NOMINAL IN. 4 specifications are documented in the U.S. Government catalog.

Is NSN 4730-01-137-2989 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.
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