PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

0N256661Filter,low Pass

National Security Agency · NSN 5915-01-124-9347 · FSC 5915 · No Item Name Available
Verified by PartsTable
NSN 5915-01-124-9347 — this item is cataloged by the U.S. Government under National Stock Number 5915-01-124-9347. Primary manufacturer part number: 0N256661.
Features
  • Filter,low Pass — FSC 5915
  • Distance Between Centerlines of Mounting Facilities Parallel to Body Length: 5.500 INCHES NOMINAL IN
  • Body Material: METAL
  • Body Length: 6.000 INCHES NOMINAL IN
  • Operating Temp Range: +0.0 TO 60.0 CELSIUS DEGC
  • Mounting Facility Type and Quantity: 4 THREADED STUD(S) LOCATION NOT OTHERWISE SPECIFIED
  • Insertion Loss at Reference Frequency Per Function in Decibels: 3.0 BLANK LOCATION NOT OTHERWISE SPECIFIED
  • Inclosure Type: ENCASED
Applications
  • Fluid filtration and purification
  • Engine intake air cleaning
  • Hydraulic system protection
General Description

The Filter,low Pass, cataloged under National Stock Number 5915-01-124-9347, 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 National Security Agency. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5915-01-124-9347
Primary Part Number0N256661
Item NameFilter,low Pass
FSC / FSG5915 / 59 — No Item Name Available
ManufacturerNational Security Agency
StatusACTIVE
Distance Between Centerlines of Mounting Facilities Parallel to Body Length5.500 INCHES NOMINAL IN
Body MaterialMETAL
Body Length6.000 INCHES NOMINAL IN
Operating Temp Range+0.0 TO 60.0 CELSIUS DEGC
Mounting Facility Type and Quantity4 THREADED STUD(S) LOCATION NOT OTHERWISE SPECIFIED
Insertion Loss at Reference Frequency Per Function in Decibels3.0 BLANK LOCATION NOT OTHERWISE SPECIFIED
Inclosure TypeENCASED
Discrimination at Specified Frequencies Per Function in Decibels1.5 MAXIMUM BLANK AND 60.0 MINIMUM BLANK FIRST FUNCTION
Distance Between Centerlines of Mounting Facilities Parallel to Body Width1.000 INCHES NOMINAL IN
Specified Frequencies of Discrimination Per Function1.00 MEGAHERTZ BLANK AND 1.30 MEGAHERTZ BLANK AND 1.35 MEGAHERTZ BLANK AND 100.00 MEGAHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED
Mounting Facility Screw Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Frequency Band Width Per Function1.00 MEGAHERTZ BLANK AND 1.30 MEGAHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED
Reference Frequency Per Function1.1 MEGAHERTZ BLANK LOCATION NOT OTHERWISE SPECIFIED
Input Impedance Per Function W/load93.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
Functional Terminal Type and Quantity1 CONNECTOR, RECEPTACLE OUTPUT SECOND FUNCTION
Style DesignatorRECTANGULAR TERMINAL/TERMINALS ON OPPOSITE SURFACES
Nominal Thread Size0.112 INCHES IN
Functional Terminal Type and Quantity1 CONNECTOR, RECEPTACLE INPUT FIRST FUNCTION
Output Impedance Per Function W/source Across Input93.0 OHMS BLANK LOCATION NOT OTHERWISE SPECIFIED
Body Width1.500 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
5998-00-020-02541559 INTERCHANGEABLE
Electronic Components Assembly
Mission Systems Davenport Inc.
5985-00-250-40201559 INTERCHANGEABLE
Attenuator,variable
Shallco, Inc
5120-00-277-9078212-45-04PC1559 INTERCHANGEABLE
Wrench,spanner
Naval Ship Systems Command
5310-00-297-04241559 INTERCHANGEABLE
Washer,flat
R.w. Fernstrum & Company
4820-00-464-9174155-9 INTERCHANGEABLE
Valve,bleeder,hydraulic System
Goodrich Corporation Div Collins Aerospace, Landing Systems (wheels & Brakes)
6625-00-819-55091559 INTERCHANGEABLE
Meter,audio Level
Jewell Instruments Llc
6150-01-004-52711559 INTERCHANGEABLE
Lead,electrical
Elliott Machine Works Inc
5985-01-108-77401559 INTERCHANGEABLE
Switch,radio Frequency Transmiss
General Microwave Corporation Div Kratos Microwave Electronics
6625-01-110-41741559 INTERCHANGEABLE
Clip Set
Electro Scientific Industries Inc
5310-01-157-13751559 INTERCHANGEABLE
Washer,lock
Jacobs Mfg Co the
Cross-Reference Index
Part NumberManufacturer
0N256661 PRIMARY National Security Agency (USA)
1559 Kr Electronics Inc (USA)
Related Parts
5998-00-020-0254INTERCHANGEABLE
ELECTRONIC COMPONENTS ASSEMBLY
1559
5985-00-250-4020INTERCHANGEABLE
ATTENUATOR,VARIABLE
1559
5120-00-277-9078INTERCHANGEABLE
WRENCH,SPANNER
212-45-04PC1559
5310-00-297-0424INTERCHANGEABLE
WASHER,FLAT
1559
4820-00-464-9174INTERCHANGEABLE
VALVE,BLEEDER,HYDRAULIC SYSTEM
155-9
6625-00-819-5509INTERCHANGEABLE
METER,AUDIO LEVEL
1559
6150-01-004-5271INTERCHANGEABLE
LEAD,ELECTRICAL
1559
5985-01-108-7740INTERCHANGEABLE
SWITCH,RADIO FREQUENCY TRANSMISS
1559
6625-01-110-4174INTERCHANGEABLE
CLIP SET
1559
5310-01-157-1375INTERCHANGEABLE
WASHER,LOCK
1559

Frequently Asked Questions

What is NSN 5915-01-124-9347?

NSN 5915-01-124-9347 is a Filter,low Pass, manufactured by National Security Agency, classified under FSC 5915 (No Item Name Available). Status: active.

What are the part numbers for NSN 5915-01-124-9347?

NSN 5915-01-124-9347 has 2 cross-referenced part numbers: 0N256661 (National Security Agency), 1559 (Kr Electronics Inc).

What NSN replaces 5915-01-124-9347?

There are 10 known substitutes for 5915-01-124-9347: 5998-00-020-0254, 5985-00-250-4020, 5120-00-277-9078 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 0N256661?

Key specifications for 0N256661: Distance Between Centerlines of Mounting Facilities Parallel to Body Length: 5.500 INCHES NOMINAL IN; Overall Height: 1.000 INCHES NOMINAL IN; Body Material: METAL; Body Length: 6.000 INCHES NOMINAL IN. 22 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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