PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

668047Filter,fluid

Lockheed Martin Corp · NSN 1650-00-529-4148 · FSC 1650 · No Item Name Available
Verified by PartsTable
NSN 1650-00-529-4148 — this item is cataloged by the U.S. Government under National Stock Number 1650-00-529-4148. Primary manufacturer part number: 668047.
Features
  • Filter,fluid — FSC 1650
  • Body Length: 3.500 INCHES NOMINAL IN
  • Filtering Element Quantity: 1
  • Filtering Media Design: ENCASED SINGLE FILTERING MEDIA RESPONSE
  • Material: COPPER ALLOY FILTERING MEDIUM
  • First Intake Thread Series Designator: UNF
  • First Intake Thread Class: 3B
  • Design Type: REUSABLE
Applications
  • Fluid filtration and purification
  • Engine intake air cleaning
  • Hydraulic system protection
  • Applications requiring Copper Alloy Filtering Medium construction
General Description

The Filter,fluid, cataloged under National Stock Number 1650-00-529-4148, is classified within Federal Supply Class 1650 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Lockheed Martin Corp. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN1650-00-529-4148
Primary Part Number668047
Item NameFilter,fluid
FSC / FSG1650 / 16 — No Item Name Available
ManufacturerLockheed Martin Corp
StatusCANCELLED
Body Length3.500 INCHES NOMINAL IN
Filtering Element Quantity1
Filtering Media DesignENCASED SINGLE FILTERING MEDIA RESPONSE
MaterialCOPPER ALLOY FILTERING MEDIUM
First Intake Thread Series DesignatorUNF
First Intake Thread Class3B
Design TypeREUSABLE
First Intake Thread DirectionRIGHT-HAND
Body Outside Diameter1.875 INCHES NOMINAL IN
MaterialALUMINUM ALLOY SEDIMENT BOWL
First Discharge Connection Relationship to Intake ConnectionIDENTICAL TO FIRST INTAKE CONNECTION
First Intake Connection TypeTHREADED INTERNAL TUBE END
Mounting TypeOUTLET CONNECTION LINE
First Intake Nominal Thread Size0.438 INCHES IN
FSC Application DataPLUMBING INSTALLATION,ENGINE COMPARTMENT,HYDRAULIC,AIRCRAFT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5950-00-031-8004 INTERCHANGEABLE
Transformer,power
4920-00-063-3511 INTERCHANGEABLE
Cap Assembly,gas Pump
2940-00-226-948082715A INTERCHANGEABLE
Filter Element,fluid
Cummins Filtration Inc.
5133-00-236-4069 INTERCHANGEABLE
Drill,twist
5950-00-272-7836619203-5 INTERCHANGEABLE
Transformer,power Autotransforme
Lockheed Martin Corp
5340-00-286-4189D3933 INTERCHANGEABLE
Button,plug
Edwin B. Stimpson Company, Inc. Dba Stimpson
2940-00-364-341516651 INTERCHANGEABLE
Handle,cleaning
Arvinmeritor Inc
2940-00-374-80304351305 INTERCHANGEABLE
Filter Element,fluid
Agco Corp Parts Opn
5330-00-448-081316-651 INTERCHANGEABLE
Gasket
Dresser Industries Inc Leroi Div
6675-00-633-744451020 INTERCHANGEABLE
Height Finder,oblique Photograph
Forestry Suppliers Inc
Cross-Reference Index
Part NumberManufacturer
668047 PRIMARY Lockheed Martin Corp (USA)
16651 Fluid Conditioning Products, Inc. (USA)
51020 Fluid Conditioning Products, Inc. (USA)
Related Parts
5950-00-031-8004INTERCHANGEABLE
TRANSFORMER,POWER
4920-00-063-3511INTERCHANGEABLE
CAP ASSEMBLY,GAS PUMP
2940-00-226-9480INTERCHANGEABLE
FILTER ELEMENT,FLUID
82715A
5133-00-236-4069INTERCHANGEABLE
DRILL,TWIST
5950-00-272-7836INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
619203-5
5340-00-286-4189INTERCHANGEABLE
BUTTON,PLUG
D3933
2940-00-364-3415INTERCHANGEABLE
HANDLE,CLEANING
16651
2940-00-374-8030INTERCHANGEABLE
FILTER ELEMENT,FLUID
4351305
5330-00-448-0813INTERCHANGEABLE
GASKET
16-651
6675-00-633-7444INTERCHANGEABLE
HEIGHT FINDER,OBLIQUE PHOTOGRAPH
51020
5945-00-967-3616INTERCHANGEABLE
SOLENOID,ELECTRICAL
5306-01-126-1169INTERCHANGEABLE
BOLT,MACHINE
166-51

Frequently Asked Questions

What is NSN 1650-00-529-4148?

NSN 1650-00-529-4148 is a Filter,fluid, manufactured by Lockheed Martin Corp, classified under FSC 1650 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 1650-00-529-4148?

NSN 1650-00-529-4148 has 3 cross-referenced part numbers: 668047 (Lockheed Martin Corp), 16651 (Fluid Conditioning Products, Inc.), 51020 (Fluid Conditioning Products, Inc.).

What NSN replaces 1650-00-529-4148?

There are 12 known substitutes for 1650-00-529-4148: 5950-00-031-8004, 4920-00-063-3511, 2940-00-226-9480 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 668047?

Key specifications for 668047: Body Length: 3.500 INCHES NOMINAL IN; Filtering Element Quantity: 1; Filtering Media Design: ENCASED SINGLE FILTERING MEDIA RESPONSE; Material: COPPER ALLOY FILTERING MEDIUM. 15 total characteristics are documented in the Federal Logistics Information System.

Is NSN 1650-00-529-4148 still in active supply?

NSN 1650-00-529-4148 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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