PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

3-43815-1Restrictor Unit,fluid Flow

Northrop Grumman Systems Corporation · NSN 4730-00-061-2822 · FSC 4730 · No Item Name Available
Verified by PartsTable
NSN 4730-00-061-2822 — this item is cataloged by the U.S. Government under National Stock Number 4730-00-061-2822. Primary manufacturer part number: 3-43815-1.
Features
  • Restrictor Unit,fluid Flow — FSC 4730
  • Thread Size Designator: 3/4-24 SECOND CONNECTION
  • Valve Size: 0.250 INCHES IN
  • Width Across Flats: 0.688 INCHES NOMINAL IN
  • Thread Series: UNF SECOND CONNECTION
  • End Connection Similarity: NOT IDENTICAL
  • Flow Rate and Fluid Type: 1.20 GALLONS PER MINUTE WATER
  • Material: STEEL CORROSION RESISTING FILTER
Applications
  • Applications requiring Steel Corrosion Resisting Filter construction
General Description

The Restrictor Unit,fluid Flow, cataloged under National Stock Number 4730-00-061-2822, 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 Northrop Grumman Systems Corporation. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 7 manufacturers, 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
NSN4730-00-061-2822
Primary Part Number3-43815-1
Item NameRestrictor Unit,fluid Flow
FSC / FSG4730 / 47 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation
StatusACTIVE
Thread Size Designator3/4-24 SECOND CONNECTION
Valve Size0.250 INCHES IN
Width Across Flats0.688 INCHES NOMINAL IN
Thread SeriesUNF SECOND CONNECTION
End Connection SimilarityNOT IDENTICAL
Flow Rate and Fluid Type1.20 GALLONS PER MINUTE WATER
MaterialSTEEL CORROSION RESISTING FILTER
Thread SeriesUNF FIRST CONNECTION
Design TypeSTRAIGHT
MaterialALUMINUM ALLOY BODY
Thread Size Designator7/16-20 FIRST CONNECTION
Operating Temp Range-65.0 TO 160.0 FAHRENHEIT DEGF
End Connection Component Type and Size for Which Designed1/4 IN. OD TUBE,3/16 IN. OD TUBE IN
Thread Class3A ALL CONNECTIONS A
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5340-00-733-4077AC60763 INTERCHANGEABLE
Loop,strap Fastener
Kinedyne Llc
5915-00-914-89682394 INTERCHANGEABLE
Filter,band Pass
Torotel, Inc. Div Torotel Products, Inc.
5331-01-030-18210-3-2-9 INTERCHANGEABLE
O-Ring
Bird-Johnson Propeller Company, Llc
6130-01-141-24082394 INTERCHANGEABLE
Power Supply
Acopian Technical Company
5910-01-143-081207-02394-0A INTERCHANGEABLE
Capacitor
Ballantine Laboratories Inc
2530-01-168-1689 INTERCHANGEABLE
Parts Kit,hydraulic Brake Master
5895-01-192-7064 INTERCHANGEABLE
Drive,tuning
5955-01-225-2700970-3882-0 INTERCHANGEABLE
Oscillator,crystal Controlled
Cts Inc
5360-01-349-55372394 INTERCHANGEABLE
Spring,helical,compression
Circor Naval Solutions Llc Dba Warren Pumps
5330-01-357-7245772394 INTERCHANGEABLE
Gasket Set
Deutz Corporation
Cross-Reference Index
Part NumberManufacturer
2510-031 Hawker Pacific Aerospace Landing Gear and Components Mfg and Repair (USA)
2510-031 Tactair Fluid Controls Inc (USA)
2394 Hawker Pacific Aerospace Landing Gear and Components Mfg and Repair (USA)
2510-.031 Kaiser Fluid Technologies Inc. (USA)
3-43815-1 Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA)
3-43815-1 PRIMARY Northrop Grumman Systems Corporation (USA)
3-43815-1 Northrop Grumman Technical Services, Inc. Dba Defense Systems Sector (USA)
2510-031 Cascade General, Llc Dba Cascade General Inc (USA)
Related Parts
5340-00-733-4077INTERCHANGEABLE
LOOP,STRAP FASTENER
AC60763
5915-00-914-8968INTERCHANGEABLE
FILTER,BAND PASS
2394
5331-01-030-1821INTERCHANGEABLE
O-RING
0-3-2-9
6130-01-141-2408INTERCHANGEABLE
POWER SUPPLY
2394
5910-01-143-0812INTERCHANGEABLE
CAPACITOR
07-02394-0A
2530-01-168-1689INTERCHANGEABLE
PARTS KIT,HYDRAULIC BRAKE MASTER
5895-01-192-7064INTERCHANGEABLE
DRIVE,TUNING
5955-01-225-2700INTERCHANGEABLE
OSCILLATOR,CRYSTAL CONTROLLED
970-3882-0
5360-01-349-5537INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
2394
5330-01-357-7245INTERCHANGEABLE
GASKET SET
772394
5120-01-368-3548INTERCHANGEABLE
WRENCH,OIL FILTER
4730-01-398-5750INTERCHANGEABLE
NIPPLE,PIPE
2394

Frequently Asked Questions

What is NSN 4730-00-061-2822?

NSN 4730-00-061-2822 is a Restrictor Unit,fluid Flow, manufactured by Northrop Grumman Systems Corporation, classified under FSC 4730 (No Item Name Available). Status: active.

What are the part numbers for NSN 4730-00-061-2822?

NSN 4730-00-061-2822 has 8 cross-referenced part numbers: 2510-031 (Hawker Pacific Aerospace Landing Gear and Components Mfg and Repair), 2510-031 (Tactair Fluid Controls Inc), 2394 (Hawker Pacific Aerospace Landing Gear and Components Mfg and Repair), 2510-.031 (Kaiser Fluid Technologies Inc.), 3-43815-1 (Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems) and 3 more.

What NSN replaces 4730-00-061-2822?

There are 12 known substitutes for 4730-00-061-2822: 5340-00-733-4077, 5915-00-914-8968, 5331-01-030-1821 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 3-43815-1?

Key specifications for 3-43815-1: Thread Size Designator: 3/4-24 SECOND CONNECTION; Valve Size: 0.250 INCHES IN; Width Across Flats: 0.688 INCHES NOMINAL IN; Thread Series: UNF SECOND CONNECTION. 16 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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