PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

815821Filter,radio Frequency Interfere

Lockheed Martin Corporation Div Rms - Mitchel Field · NSN 5915-00-503-1881 · FSC 5915 · No Item Name Available
Verified by PartsTable
NSN 5915-00-503-1881 — this item is cataloged by the U.S. Government under National Stock Number 5915-00-503-1881. Primary manufacturer part number: 815821.
Features
  • Filter,radio Frequency Interfere — FSC 5915
  • Body Length: 2.000 INCHES MAXIMUM IN
  • Principal Circuitry Type Per Function: INDUCTANCE-CAPACITANCE 2ND RADIO INTERFERENCE SECOND FUNCTION
  • Operating Current Rating Per Function in Amps: 5.0 1ST RADIO INTERFERENCE FIRST FUNCTION
  • Source Impedance Rating Per Function: 50.0 OHMS 2ND RADIO INTERFERENCE SECOND FUNCTION
  • Load Impedance Per Function: 50.0 OHMS 1ST RADIO INTERFERENCE FIRST FUNCTION
  • Load Impedance Per Function: 50.0 OHMS 2ND RADIO INTERFERENCE SECOND FUNCTION
  • Functional Terminal Type and Quantity: 2 THREADED STUD INPUT FIRST FUNCTION
Applications
  • Fluid filtration and purification
  • Engine intake air cleaning
  • Hydraulic system protection
General Description

The Filter,radio Frequency Interfere, cataloged under National Stock Number 5915-00-503-1881, is classified within Federal Supply Class 5915 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Lockheed Martin Corporation Div Rms - Mitchel Field. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 8 commercial cross-references from 6 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
NSN5915-00-503-1881
Primary Part Number815821
Item NameFilter,radio Frequency Interfere
FSC / FSG5915 / 59 — No Item Name Available
ManufacturerLockheed Martin Corporation Div Rms - Mitchel Field
StatusCANCELLED
Body Length2.000 INCHES MAXIMUM IN
Principal Circuitry Type Per FunctionINDUCTANCE-CAPACITANCE 2ND RADIO INTERFERENCE SECOND FUNCTION
Operating Current Rating Per Function in Amps5.0 1ST RADIO INTERFERENCE FIRST FUNCTION
Source Impedance Rating Per Function50.0 OHMS 2ND RADIO INTERFERENCE SECOND FUNCTION
Load Impedance Per Function50.0 OHMS 1ST RADIO INTERFERENCE FIRST FUNCTION
Load Impedance Per Function50.0 OHMS 2ND RADIO INTERFERENCE SECOND FUNCTION
Functional Terminal Type and Quantity2 THREADED STUD INPUT FIRST FUNCTION
Mounting Facility Type and Quantity4 UNTHREADED HOLE(S) LOCATION NOT OTHERWISE SPECIFIED
Operating Voltage Rating and Type Per Function150.0 VOLTS DC 1ST RADIO INTERFERENCE FIRST FUNCTION
Operating Voltage Rating and Type Per Function150.0 VOLTS DC 2ND RADIO INTERFERENCE SECOND FUNCTION
Distance Between Centerlines of Mounting Facilities Parallel to Body Length2.375 INCHES NOMINAL IN
Unthreaded Mounting Hole Diameter0.187 INCHES NOMINAL IN
Body Width1.562 INCHES MAXIMUM IN
Principal Circuitry Type Per FunctionINDUCTANCE-CAPACITANCE 1ST RADIO INTERFERENCE FIRST FUNCTION
Inclosure TypeHERMETICALLY SEALED
Operating Temp Range-55.0 TO 85.0 CELSIUS DEGC
Body Height1.625 INCHES MAXIMUM IN
Operating Current Rating Per Function in Amps5.0 2ND RADIO INTERFERENCE SECOND FUNCTION
Distance Between Centerlines of Mounting Facilities Parallel to Body Width1.000 INCHES NOMINAL IN
Functional Terminal Type and Quantity2 THREADED STUD OUTPUT SECOND FUNCTION
Source Impedance Rating Per Function50.0 OHMS 1ST RADIO INTERFERENCE FIRST FUNCTION
Style DesignatorRECTANGULAR TERMINAL/TERMINALS ON OPPOSITE SURFACES
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5945-00-089-4882128SCAV379-1 INTERCHANGEABLE
Relay,hybrid
Northrop Grumman Systems Corporation
3110-00-120-4200141852 INTERCHANGEABLE
Roller,bearing
Chrysler Realty Company Llc Dba Daimler Chrysler
6625-00-504-14868495619 INTERCHANGEABLE
Adapter,test
Us Army Aviation and Missile Command
6240-00-617-0248P4214400 INTERCHANGEABLE
Lamp,incandescent
Phoenix Products Llc Dba Phoenix Lighting Products Llc
5940-00-813-056310-209-1 INTERCHANGEABLE
Terminal,stud
Concord Electronics, Inc.
5355-00-958-964461A36C39 INTERCHANGEABLE
Dial,control
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5820-01-165-4419 INTERCHANGEABLE
Relay Unit,control
4820-01-221-15701241 5T15PSI 5.00IPS FLGE BRZ INTERCHANGEABLE
Valve,safety Relief
Emerson Automation Solutions Final Control Us Lp Div Navy Product Team
3611-01-331-5029E-1433 INTERCHANGEABLE
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3830-01-396-4996 INTERCHANGEABLE
Cover,shaft
Cross-Reference Index
Part NumberManufacturer
M1550 Mtk Electronics Inc (USA)
5177 Lindgren Rf Enclosures Inc Elmag Div (USA)
1305B1 Cornell-Dubilier Electronics (USA)
815821 PRIMARY Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
FA527 Ems Development Corporation Dba Ems Development Corp (USA)
9249 Cornell-Dubilier Electronics (USA)
FA527 Filtron Co Inc Div of Rfi Corp (USA)
E-1433 Lindgren Rf Enclosures Inc Elmag Div (USA)
Related Parts
5945-00-089-4882INTERCHANGEABLE
RELAY,HYBRID
128SCAV379-1
3110-00-120-4200INTERCHANGEABLE
ROLLER,BEARING
141852
6625-00-504-1486INTERCHANGEABLE
ADAPTER,TEST
8495619
6240-00-617-0248INTERCHANGEABLE
LAMP,INCANDESCENT
P4214400
5940-00-813-0563INTERCHANGEABLE
TERMINAL,STUD
10-209-1
5355-00-958-9644INTERCHANGEABLE
DIAL,CONTROL
61A36C39
5820-01-165-4419INTERCHANGEABLE
RELAY UNIT,CONTROL
4820-01-221-1570INTERCHANGEABLE
VALVE,SAFETY RELIEF
1241 5T15PSI 5.00IPS FLGE BRZ
3611-01-331-5029INTERCHANGEABLE
GUIDE,MARKING MACHI
E-1433
3830-01-396-4996INTERCHANGEABLE
COVER,SHAFT
5999-01-481-9119INTERCHANGEABLE
SHIELDING GASKET,ELECTRONIC
E-1433
5342-01-491-0501INTERCHANGEABLE
ANODE,CORROSION PREVENTIVE
81582-1

Frequently Asked Questions

What is NSN 5915-00-503-1881?

NSN 5915-00-503-1881 is a Filter,radio Frequency Interfere, manufactured by Lockheed Martin Corporation Div Rms - Mitchel Field, classified under FSC 5915 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5915-00-503-1881?

NSN 5915-00-503-1881 has 8 cross-referenced part numbers: M1550 (Mtk Electronics Inc), 5177 (Lindgren Rf Enclosures Inc Elmag Div), 1305B1 (Cornell-Dubilier Electronics), 815821 (Lockheed Martin Corporation Div Rms - Mitchel Field), FA527 (Ems Development Corporation Dba Ems Development Corp) and 3 more.

What NSN replaces 5915-00-503-1881?

There are 12 known substitutes for 5915-00-503-1881: 5945-00-089-4882, 3110-00-120-4200, 6625-00-504-1486 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 815821?

Key specifications for 815821: Body Length: 2.000 INCHES MAXIMUM IN; Principal Circuitry Type Per Function: INDUCTANCE-CAPACITANCE 2ND RADIO INTERFERENCE SECOND FUNCTION; Operating Current Rating Per Function in Amps: 5.0 1ST RADIO INTERFERENCE FIRST FUNCTION; Source Impedance Rating Per Function: 50.0 OHMS 2ND RADIO INTERFERENCE SECOND FUNCTION. 23 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5915-00-503-1881 still in active supply?

NSN 5915-00-503-1881 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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