PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-A-3933/1Attenuator,fixed

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5985-01-309-3405 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-01-309-3405 — this item is cataloged by the U.S. Government under National Stock Number 5985-01-309-3405. Primary manufacturer part number: MIL-A-3933/1.
Features
  • Attenuator,fixed — FSC 5985
  • Specification/standard Data: 81349-MIL-A-3933/1 GOVERNMENT SPECIFICATION
  • Attenuation Accuracy in Decibels: -0.40 TO 0.50
  • Power Rating: 1.0 WATTS AVERAGE AND 1.0 KILOWATTS PEAK
  • Rf Signal Attenuation in Decibels: 40.0
  • Connection Type Per Function: FEMALE INPUT AND MALE OUTPUT
  • Overall Diameter: 0.760 INCHES MAXIMUM IN
  • Voltage Standing Wave Ratio Frequency Range: +0.0 TO 3.0 GIGAHERTZ
Applications
  • Applications requiring Copper Alloy Body construction
General Description

The Attenuator,fixed, cataloged under National Stock Number 5985-01-309-3405, 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 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 21 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5985-01-309-3405
Primary Part NumberMIL-A-3933/1
Item NameAttenuator,fixed
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Specification/standard Data81349-MIL-A-3933/1 GOVERNMENT SPECIFICATION
Attenuation Accuracy in Decibels-0.40 TO 0.50
Power Rating1.0 WATTS AVERAGE AND 1.0 KILOWATTS PEAK
Rf Signal Attenuation in Decibels40.0
Connection Type Per FunctionFEMALE INPUT AND MALE OUTPUT
Overall Diameter0.760 INCHES MAXIMUM IN
Voltage Standing Wave Ratio Frequency Range+0.0 TO 3.0 GIGAHERTZ
Operating Temp Range-55.0 TO 85.0 CELSIUS DEGC
Coaxial Connector Series DesignationN
Voltage Standing Wave Ratio1.02 AND 1.20
Frequency Range0.000 HERTZ MINIMUM AND 3.000 GIGAHERTZ MAXIMUM
Mounting MethodCONNECTOR
Terminal Type and Quantity2 CONNECTOR
Input Impedance Rating in Ohms50.0
Output Impedance Rating in Ohms50.0
Unpackaged Unit Weight5.500 OUNCES OZ
Body StyleROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE
MaterialCOPPER ALLOY BODY
FSC Application DataANTENNAS,WAVEGUIDES,AND RELATED EQUIP.
Application DesignTRANSMISSION LINE
Test Data Document81349-MIL-A-3933 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5985-01-153-9430 INTERCHANGEABLE
Attenuator,fixed
5985-01-228-9810 INTERCHANGEABLE
Attenuator,fixed
Cross-Reference Index
Part NumberManufacturer
MIL-A-3933/1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M3933/1-17N Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
723850-13 Raytheon Company Div Rmd Strategic (USA)
Related Parts
5985-01-153-9430INTERCHANGEABLE
ATTENUATOR,FIXED
5985-01-228-9810INTERCHANGEABLE
ATTENUATOR,FIXED

Frequently Asked Questions

What is NSN 5985-01-309-3405?

NSN 5985-01-309-3405 is a Attenuator,fixed, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5985 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5985-01-309-3405?

NSN 5985-01-309-3405 has 3 cross-referenced part numbers: MIL-A-3933/1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M3933/1-17N (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 723850-13 (Raytheon Company Div Rmd Strategic).

What NSN replaces 5985-01-309-3405?

There are 2 known substitutes for 5985-01-309-3405: 5985-01-153-9430, 5985-01-228-9810. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-A-3933/1?

Key specifications for MIL-A-3933/1: Specification/standard Data: 81349-MIL-A-3933/1 GOVERNMENT SPECIFICATION; Attenuation Accuracy in Decibels: -0.40 TO 0.50; Power Rating: 1.0 WATTS AVERAGE AND 1.0 KILOWATTS PEAK; Overall Length: 4.375 INCHES MAXIMUM IN. 22 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5985-01-309-3405 still in active supply?

NSN 5985-01-309-3405 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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