PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1766Restrictor,fluid Flow

Droitcour Co · NSN 4730-01-415-4439 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-01-415-4439 — this item is cataloged by the U.S. Government under National Stock Number 4730-01-415-4439. Primary manufacturer part number: 1766.
Features
  • Restrictor,fluid Flow — FSC 4730
  • Thread Provision: UNTHREADED LOCATION NOT OTHERWISE SPECIFIED
  • Material: STEEL CORROSION RESISTING
  • Orifice Diameter: 0.152 INCHES MINIMUM AND 0.154 INCHES MAXIMUM IN
  • Design Type: TUBULAR
  • Outside Diameter: 0.641 INCHES MINIMUM AND 0.646 INCHES MAXIMUM IN
  • Length: 0.652 INCHES MINIMUM AND 0.662 INCHES MAXIMUM IN
  • 1 verified cross-reference
Applications
  • Applications requiring Steel Corrosion Resisting construction
General Description

The Restrictor,fluid Flow, cataloged under National Stock Number 4730-01-415-4439, is classified within Federal Supply Class 4730 (No Item Name Available) of the Pipe, Tubing, Hose, and Fittings group. The primary manufacturer of record is Droitcour Co. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4730-01-415-4439
Primary Part Number1766
Item NameRestrictor,fluid Flow
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerDroitcour Co
StatusACTIVE
Thread ProvisionUNTHREADED LOCATION NOT OTHERWISE SPECIFIED
MaterialSTEEL CORROSION RESISTING
Orifice Diameter0.152 INCHES MINIMUM AND 0.154 INCHES MAXIMUM IN
Design TypeTUBULAR
Outside Diameter0.641 INCHES MINIMUM AND 0.646 INCHES MAXIMUM IN
Length0.652 INCHES MINIMUM AND 0.662 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
3110-00-142-4335B543SD610 INTERCHANGEABLE
Bearing,ball,airframe
New Hampshire Ball Bearings Inc Div Hitech Division
5930-00-201-4427 INTERCHANGEABLE
Switch,thermostatic
7510-00-286-17161764 INTERCHANGEABLE
Ink,duplicating Machine Stencil
Abd Intl Inc Dba Abdick
5330-00-399-69661766 INTERCHANGEABLE
Gasket
Dana Automotive Systems Group, Llc Dba Dana Sealing Products
5930-00-615-9376 INTERCHANGEABLE
Switch,toggle
5950-00-681-29961857568 INTERCHANGEABLE
Reactor
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5975-00-683-27398720 INTERCHANGEABLE
Coupling,electrical Conduit
Abb Installation Products Inc
5930-00-842-0177T26T-3C INTERCHANGEABLE
Switch,thermostatic
Johnson Controls Inc Control Products Div
5360-00-896-6686530B001766 INTERCHANGEABLE
Spring,detent
L3 Technologies, Inc. Div L3 Keo
5950-00-954-30591023803 INTERCHANGEABLE
Reactor
Lockheed Martin Corporation Div Rms - Mitchel Field
Cross-Reference Index
Part NumberManufacturer
1766 PRIMARY Droitcour Co (USA)
Related Parts
3110-00-142-4335INTERCHANGEABLE
BEARING,BALL,AIRFRAME
B543SD610
5930-00-201-4427INTERCHANGEABLE
SWITCH,THERMOSTATIC
7510-00-286-1716INTERCHANGEABLE
INK,DUPLICATING MACHINE STENCIL
1764
5330-00-399-6966INTERCHANGEABLE
GASKET
1766
5930-00-615-9376INTERCHANGEABLE
SWITCH,TOGGLE
5950-00-681-2996INTERCHANGEABLE
REACTOR
1857568
5975-00-683-2739INTERCHANGEABLE
COUPLING,ELECTRICAL CONDUIT
8720
5930-00-842-0177INTERCHANGEABLE
SWITCH,THERMOSTATIC
T26T-3C
5360-00-896-6686INTERCHANGEABLE
SPRING,DETENT
530B001766
5950-00-954-3059INTERCHANGEABLE
REACTOR
1023803
4720-01-136-6570INTERCHANGEABLE
HOSE,NONMETALLIC
601/AE701
4810-01-413-0111INTERCHANGEABLE
VALVE,SOLENOID
911B-PM-111BA

Frequently Asked Questions

What is NSN 4730-01-415-4439?

NSN 4730-01-415-4439 is a Restrictor,fluid Flow, manufactured by Droitcour Co, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-01-415-4439?

NSN 4730-01-415-4439 has 1 cross-referenced part number: 1766 (Droitcour Co).

What NSN replaces 4730-01-415-4439?

There are 12 known substitutes for 4730-01-415-4439: 3110-00-142-4335, 5930-00-201-4427, 7510-00-286-1716 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1766?

Key specifications for 1766: Thread Provision: UNTHREADED LOCATION NOT OTHERWISE SPECIFIED; End Item Identification: SEAWOLF CLASS SSN; Material: STEEL CORROSION RESISTING; Orifice Diameter: 0.152 INCHES MINIMUM AND 0.154 INCHES MAXIMUM IN. 7 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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