Restrictor, Fluid Flow4730-00-901-1909

NSN 4730-00-901-1909 · NIIN 009011909 · Part number SS4017-4

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 4730-00-901-1909 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-901-1909. Manufacturer of record part number: SS4017-4.

Also searched as 4730-00-901-1909 · 4730009011909 · NIIN 009011909 · 00-901-1909 · FSC 4730 Hose, Pipe, Tube, Lubrication, and Railing Fittings · CAGE 78286 · SS4017-4

Nearby stock numbers ← 4730-00-901-1822 · 4730-00-901-1937 →

4730-00-901-1909 — Hose, Pipe, Tube, Lubrication, and Railing Fittings

Features

Restrictor,fluid Flow — FSC 4730
Length: 0.281 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN
Thread Provision: THREADED LOCATION NOT OTHERWISE SPECIFIED
Design Type: PLATE
Thread Series: UNIFIED NATIONAL COARSE (UNC) FIRST PROVISION
Thread Length: 0.281 INCHES MINIMUM FIRST PROVISION IN
Thread Length: 0.343 INCHES MAXIMUM SECOND PROVISION IN
Outside Diameter: 0.250 INCHES NOMINAL IN

Identification

NSN: 4730-00-901-1909
NIIN: 009011909
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
FSG: 47 — Pipe, Tubing, Hose, and Fittings
Primary part number: SS4017-4
Manufacturer: Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp

General Description

The Restrictor,fluid Flow, cataloged under National Stock Number 4730-00-901-1909, 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 13 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Technical Specifications

Parameter	Value
NSN	4730-00-901-1909
Primary Part Number	SS4017-4
Item Name	Restrictor,fluid Flow
FSC / FSG	4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Manufacturer	Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp
Status	ACTIVE
Length	0.281 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN
Thread Provision	THREADED LOCATION NOT OTHERWISE SPECIFIED
Design Type	PLATE
Thread Series	UNIFIED NATIONAL COARSE (UNC) FIRST PROVISION
Thread Length	0.281 INCHES MINIMUM FIRST PROVISION IN
Thread Length	0.343 INCHES MAXIMUM SECOND PROVISION IN
Outside Diameter	0.250 INCHES NOMINAL IN
Thread Direction	RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
Thread Size Designator	1/4 IN.-20 LOCATION NOT OTHERWISE SPECIFIED IN
Surface Treatment	CADMIUM
Thread Class	2A LOCATION NOT OTHERWISE SPECIFIED A
Material	STEEL
Orifice Diameter	0.070 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

Cross-Reference Index

Part Number	Manufacturer
SS4017-4	Stevens Manufacturing Co., Inc. (USA)
SS4017-4	W and G Machine Company, Incorporated (USA)
SS4017-4 PRIMARY	Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA)
SS4017-4	Massie R P and Sons Inc (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 4730-00-901-1909?

NSN 4730-00-901-1909 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 4730-00-901-1909?

NSN 4730-00-901-1909 has 4 manufacturer part numbers on file: SS4017-4 (Stevens Manufacturing Co., Inc.), SS4017-4 (W and G Machine Company, Incorporated), SS4017-4 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), SS4017-4 (Massie R P and Sons Inc).

What are the specifications of SS4017-4?

Key specifications for SS4017-4: Length: 0.281 INCHES MINIMUM AND 0.343 INCHES MAXIMUM IN; Thread Provision: THREADED LOCATION NOT OTHERWISE SPECIFIED; Design Type: PLATE; Thread Series: UNIFIED NATIONAL COARSE (UNC) FIRST PROVISION. 13 specifications are documented in the U.S. Government catalog.

Is NSN 4730-00-901-1909 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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