PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20510-3Attenuator,fixed

Cobham Advanced Electronic Solutions Inc. · NSN 5985-00-199-0476 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-199-0476 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-199-0476. Primary manufacturer part number: 20510-3.
Features
  • Attenuator,fixed — FSC 5985
  • Surface Treatment: GOLD PLATED (USE AUA000) AND (MRC BRFC) AND NICKEL BODY
  • Application Design: TRANSMISSION LINE
  • Output Impedance Rating in Ohms: 50.0
  • Rf Signal Attenuation in Decibels: 3.0
  • Body Style: ROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE
  • Overall Diameter: 0.385 INCHES NOMINAL IN
  • Frequency Range: 0.000 HERTZ MINIMUM AND 2.000 GIGAHERTZ MAXIMUM
Applications
  • Applications requiring Steel Comp 303 Body construction
General Description

The Attenuator,fixed, cataloged under National Stock Number 5985-00-199-0476, is classified within Federal Supply Class 5985 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Cobham Advanced Electronic Solutions Inc.. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-00-199-0476
Primary Part Number20510-3
Item NameAttenuator,fixed
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerCobham Advanced Electronic Solutions Inc.
StatusACTIVE
Surface TreatmentGOLD PLATED (USE AUA000) AND (MRC BRFC) AND NICKEL BODY
Application DesignTRANSMISSION LINE
Output Impedance Rating in Ohms50.0
Rf Signal Attenuation in Decibels3.0
Body StyleROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE
Overall Diameter0.385 INCHES NOMINAL IN
Frequency Range0.000 HERTZ MINIMUM AND 2.000 GIGAHERTZ MAXIMUM
Input Impedance Rating in Ohms50.0
Power Rating250.0 MILLIWATTS AVERAGE
Terminal Type and Quantity2 CONNECTOR
Coaxial Connector Series DesignationOSM
Connection Type Per FunctionFEMALE OUTPUT AND MALE INPUT
Mounting MethodTERMINAL
Attenuation Accuracy in Decibels-0.015 TO 0.015
Material Document and ClassificationQQ-S-763, CLASS 303, COND A FED SPEC SINGLE MATERIAL RESPONSE BODY
MaterialSTEEL COMP 303 BODY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5935-00-258-98973193664-2 INTERCHANGEABLE
Jack,tip
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
4730-00-288-9490110-3 INTERCHANGEABLE
Tee,pipe to Tube
Crane Carrier Company, Llc
6110-00-877-261620510-3 INTERCHANGEABLE
Regulator,voltage
Electric Regulator Corp
5905-00-900-1408900217-263 INTERCHANGEABLE
Resistor,variable,wire Wound,pre
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5985-01-106-849011438800 INTERCHANGEABLE
Attenuator,fixed
Us Army Aviation and Missile Command
Cross-Reference Index
Part NumberManufacturer
20510-3 Cobham Advanced Electronic Solutions Inc. (USA)
A303M Caes Systems Llc (USA)
2082-6171-03 Cobham Advanced Electronic Solutions Inc. (USA)
26-807036-3 General Dynamics Advanced Information Systems Inc. Dba General Dynamics Advanced Information Systems (USA)
Related Parts
5935-00-258-9897INTERCHANGEABLE
JACK,TIP
3193664-2
4730-00-288-9490INTERCHANGEABLE
TEE,PIPE TO TUBE
110-3
6110-00-877-2616INTERCHANGEABLE
REGULATOR,VOLTAGE
20510-3
5905-00-900-1408INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,PRE
900217-263
5985-01-106-8490INTERCHANGEABLE
ATTENUATOR,FIXED
11438800

Frequently Asked Questions

What is NSN 5985-00-199-0476?

NSN 5985-00-199-0476 is a Attenuator,fixed, manufactured by Cobham Advanced Electronic Solutions Inc., classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-00-199-0476?

NSN 5985-00-199-0476 has 4 cross-referenced part numbers: 20510-3 (Cobham Advanced Electronic Solutions Inc.), A303M (Caes Systems Llc), 2082-6171-03 (Cobham Advanced Electronic Solutions Inc.), 26-807036-3 (General Dynamics Advanced Information Systems Inc. Dba General Dynamics Advanced Information Systems).

What NSN replaces 5985-00-199-0476?

There are 5 known substitutes for 5985-00-199-0476: 5935-00-258-9897, 4730-00-288-9490, 6110-00-877-2616 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20510-3?

Key specifications for 20510-3: Surface Treatment: GOLD PLATED (USE AUA000) AND (MRC BRFC) AND NICKEL BODY; Application Design: TRANSMISSION LINE; Output Impedance Rating in Ohms: 50.0; Rf Signal Attenuation in Decibels: 3.0. 17 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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