PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

81539Filter,radio Frequency Interfere

Keco Industries, Inc. · NSN 5915-00-179-2891 · FSC 5915 · No Item Name Available
Verified by PartsTable
NSN 5915-00-179-2891 — this item is cataloged by the U.S. Government under National Stock Number 5915-00-179-2891. Primary manufacturer part number: 81539.
Features
  • Filter,radio Frequency Interfere — FSC 5915
  • Operating Voltage Rating and Type Per Function: 208.0 VOLTS AC 1ST RADIO INTERFERENCE FIRST FUNCTION
  • Load Impedance Per Function: 50.0 OHMS 3RD RADIO INTERFERENCE THIRD FUNCTION
  • Power Line Frequency Rating Per Function in Hertz: 60.0 2ND RADIO INTERFERENCE SECOND FUNCTION
  • Body Surface Treatment: TIN
  • Source Impedance Rating Per Function: 50.0 OHMS 1ST RADIO INTERFERENCE FIRST FUNCTION
  • Operating Voltage Rating and Type Per Function: 208.0 VOLTS AC 3RD RADIO INTERFERENCE THIRD FUNCTION
  • Inclosure Type: HERMETICALLY SEALED
Applications
  • Fluid filtration and purification
  • Engine intake air cleaning
  • Hydraulic system protection
General Description

The Filter,radio Frequency Interfere, cataloged under National Stock Number 5915-00-179-2891, 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 Keco Industries, Inc.. Government technical data includes 29 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. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5915-00-179-2891
Primary Part Number81539
Item NameFilter,radio Frequency Interfere
FSC / FSG5915 / 59 — No Item Name Available
ManufacturerKeco Industries, Inc.
StatusACTIVE
Operating Voltage Rating and Type Per Function208.0 VOLTS AC 1ST RADIO INTERFERENCE FIRST FUNCTION
Load Impedance Per Function50.0 OHMS 3RD RADIO INTERFERENCE THIRD FUNCTION
Power Line Frequency Rating Per Function in Hertz60.0 2ND RADIO INTERFERENCE SECOND FUNCTION
Body Surface TreatmentTIN
Source Impedance Rating Per Function50.0 OHMS 1ST RADIO INTERFERENCE FIRST FUNCTION
Operating Voltage Rating and Type Per Function208.0 VOLTS AC 3RD RADIO INTERFERENCE THIRD FUNCTION
Inclosure TypeHERMETICALLY SEALED
Mounting Facility Type and Quantity6 THREADED STUD(S) LOCATION NOT OTHERWISE SPECIFIED
Operating Current Rating Per Function in Amps20.0 2ND RADIO INTERFERENCE SECOND FUNCTION
Source Impedance Rating Per Function50.0 OHMS 2ND RADIO INTERFERENCE SECOND FUNCTION
Body MaterialMETAL
Functional Terminal Type and Quantity3 THREADED STUD INPUT FIRST FUNCTION
Style DesignatorRECTANGULAR TERMINAL/TERMINALS ON OPPOSITE SURFACES
Body Width4.750 INCHES NOMINAL IN
Functional Terminal Type and Quantity2 THREADED STUD GROUND THIRD FUNCTION
Operating Temp Range-55.0 TO 85.0 CELSIUS DEGC
Body Height3.500 INCHES NOMINAL IN
Body Length6.875 INCHES NOMINAL IN
Source Impedance Rating Per Function50.0 OHMS 3RD RADIO INTERFERENCE THIRD FUNCTION
Functional Terminal Type and Quantity3 THREADED STUD OUTPUT SECOND FUNCTION
Operating Current Rating Per Function in Amps20.0 3RD RADIO INTERFERENCE THIRD FUNCTION
Mounting Facility Screw Thread Series DesignatorUNF
Nominal Thread Size0.190 INCHES IN
Load Impedance Per Function50.0 OHMS 1ST RADIO INTERFERENCE FIRST FUNCTION
Operating Current Rating Per Function in Amps20.0 1ST RADIO INTERFERENCE FIRST FUNCTION
Operating Voltage Rating and Type Per Function208.0 VOLTS AC 2ND RADIO INTERFERENCE SECOND FUNCTION
Load Impedance Per Function50.0 OHMS 2ND RADIO INTERFERENCE SECOND FUNCTION
Power Line Frequency Rating Per Function in Hertz60.0 1ST RADIO INTERFERENCE FIRST FUNCTION
Power Line Frequency Rating Per Function in Hertz60.0 3RD RADIO INTERFERENCE THIRD FUNCTION
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5330-00-246-3093 INTERCHANGEABLE
Packing,cup
6750-01-066-99193960 INTERCHANGEABLE
Plate,photographic
Horizons Incorporated Div Imaging Systems Group
2510-01-321-366532208 INTERCHANGEABLE
Shock Absorber,direct Action
Tenneco Inc
1550-01-670-306781539 INTERCHANGEABLE
Unmanned Aircraft System
Aerovironment, Inc. Dba Aerovironment Inc
Cross-Reference Index
Part NumberManufacturer
81539 Keco Industries, Inc. (USA)
Related Parts
5330-00-246-3093INTERCHANGEABLE
PACKING,CUP
6750-01-066-9919INTERCHANGEABLE
PLATE,PHOTOGRAPHIC
3960
2510-01-321-3665INTERCHANGEABLE
SHOCK ABSORBER,DIRECT ACTION
32208
1550-01-670-3067INTERCHANGEABLE
UNMANNED AIRCRAFT SYSTEM
81539

Frequently Asked Questions

What is NSN 5915-00-179-2891?

NSN 5915-00-179-2891 is a Filter,radio Frequency Interfere, manufactured by Keco Industries, Inc., classified under FSC 5915 (No Item Name Available). Status: active.

What are the part numbers for NSN 5915-00-179-2891?

NSN 5915-00-179-2891 has 1 cross-referenced part number: 81539 (Keco Industries, Inc.).

What NSN replaces 5915-00-179-2891?

There are 4 known substitutes for 5915-00-179-2891: 5330-00-246-3093, 6750-01-066-9919, 2510-01-321-3665 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 81539?

Key specifications for 81539: Operating Voltage Rating and Type Per Function: 208.0 VOLTS AC 1ST RADIO INTERFERENCE FIRST FUNCTION; Load Impedance Per Function: 50.0 OHMS 3RD RADIO INTERFERENCE THIRD FUNCTION; Power Line Frequency Rating Per Function in Hertz: 60.0 2ND RADIO INTERFERENCE SECOND FUNCTION; Body Surface Treatment: TIN. 30 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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