PartsTable TECHNICAL DATA SHEET
NSN 4730-01-171-8809Government record, cited

Restrictor, Fluid Flow4730-01-171-8809

NSN 4730-01-171-8809 · NIIN 011718809 · Part number 70450-21094-041
Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp · FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings · FSG 47 — Pipe, Tubing, Hose, and Fittings · CAGE 78286
Government record, cited
NSN 4730-01-171-8809 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-171-8809. Manufacturer of record part number: 70450-21094-041.
Also searched as  4730-01-171-8809 · 4730011718809 · NIIN 011718809 · 01-171-8809 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · CAGE 78286 · 70450-21094-041 · 70450-21094
Nearby stock numbers  ·
Features
  • Restrictor,fluid Flow — FSC 4730
  • Length: 1.375 INCHES NOMINAL IN
  • Thread Provision: THREADED LOCATION NOT OTHERWISE SPECIFIED
  • Design Type: PLATE
  • Thread Series: UNF LOCATION NOT OTHERWISE SPECIFIED
  • Thread Length: 0.562 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
  • Outside Diameter: 0.375 INCHES NOMINAL IN
  • Thread Direction: RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
Identification
  • NSN: 4730-01-171-8809
  • NIIN: 011718809
  • FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
  • FSG: 47 — Pipe, Tubing, Hose, and Fittings
  • Primary part number: 70450-21094-041
  • Manufacturer: Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp
General Description

The Restrictor,fluid Flow, cataloged under National Stock Number 4730-01-171-8809, 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 Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 5 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-171-8809
Primary Part Number70450-21094-041
Item NameRestrictor,fluid Flow
FSC / FSG4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
ManufacturerSikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp
StatusACTIVE
Length1.375 INCHES NOMINAL IN
Thread ProvisionTHREADED LOCATION NOT OTHERWISE SPECIFIED
Design TypePLATE
Thread SeriesUNF LOCATION NOT OTHERWISE SPECIFIED
Thread Length0.562 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
Outside Diameter0.375 INCHES NOMINAL IN
Thread DirectionRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
Thread Size Designator9/16-12 LOCATION NOT OTHERWISE SPECIFIED
Thread Class3A LOCATION NOT OTHERWISE SPECIFIED A
MaterialALUMINUM
Orifice Diameter0.0160 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
⇄ Related Items 5
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
4730-01-171-881070450-21094-042 POSSIBLE MATCH
RESTRICTOR,FLUID FLOW
Possible match (shared part number)Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp
4730-01-171-881170450-21094-043 POSSIBLE MATCH
RESTRICTOR,FLUID FLOW
Possible match (shared part number)Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp
4730-01-173-120470450-21094-044 POSSIBLE MATCH
RESTRICTOR,FLUID FLOW
Possible match (shared part number)Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp
4730-01-198-862370450-21094-045 POSSIBLE MATCH
RESTRICTOR,FLUID FLOW
Possible match (shared part number)Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp
4730-01-294-984170450-21094-107 POSSIBLE MATCH
RESTRICTOR,FLUID FLOW
Possible match (shared part number)Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp
Cross-Reference Index
Part NumberManufacturer
70450-21094-041 PRIMARY Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA)
Reference documents
ReferenceMeaning
70450-21094 D/9 Drawing number reference only
Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp
Related Parts
4730-01-171-8810POSSIBLE MATCH
RESTRICTOR,FLUID FLOW
70450-21094-042
4730-01-171-8811POSSIBLE MATCH
RESTRICTOR,FLUID FLOW
70450-21094-043
4730-01-173-1204POSSIBLE MATCH
RESTRICTOR,FLUID FLOW
70450-21094-044
4730-01-198-8623POSSIBLE MATCH
RESTRICTOR,FLUID FLOW
70450-21094-045
4730-01-294-9841POSSIBLE MATCH
RESTRICTOR,FLUID FLOW
70450-21094-107

Frequently Asked Questions

What is NSN 4730-01-171-8809?

NSN 4730-01-171-8809 is a Restrictor,fluid Flow, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.

What part numbers are listed for NSN 4730-01-171-8809?

NSN 4730-01-171-8809 has 1 manufacturer part number on file: 70450-21094-041 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).

What NSN replaces 4730-01-171-8809?

5 possible matches (shared part number, not a government interchangeability claim): 4730-01-171-8810, 4730-01-171-8811, 4730-01-173-1204. Verify interchangeability with system specifications before substitution.

What are the specifications of 70450-21094-041?

Key specifications for 70450-21094-041: Length: 1.375 INCHES NOMINAL IN; Thread Provision: THREADED LOCATION NOT OTHERWISE SPECIFIED; Design Type: PLATE; Thread Series: UNF LOCATION NOT OTHERWISE SPECIFIED. 11 specifications are documented in the U.S. Government catalog.

Is NSN 4730-01-171-8809 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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