PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MIL-A-3933/18Attenuator,fixed

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5985-01-037-1726 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-01-037-1726 — this item is cataloged by the U.S. Government under National Stock Number 5985-01-037-1726. Primary manufacturer part number: MIL-A-3933/18.
Features
  • Attenuator,fixed — FSC 5985
  • Application Design: TRANSMISSION LINETRANSMISSION LINE
  • Attenuation Accuracy in Decibels: -0.80 TO 0.80-0.80 TO 0.80
  • Terminal Type and Quantity: 2 CONNECTOR2 CONNECTOR
  • Overall Diameter: 0.840 INCHES MAXIMUM0.840 INCHES MAXIMUM IN
  • Output Impedance Rating in Ohms: 50.050.0
  • Power Rating: 2.0 WATTS AVERAGE AND 2.0 WATTS AVERAGE AND 1.0 KILOWATTS PEAK1.0 KILOWATTS PEAK
  • Frequency Range: 0.000 HERTZ MINIMUM AND 0.000 HERTZ MINIMUM AND 12.400 GIGAHERTZ MAXIMUM12.400 GIGAHERTZ MAXIMUM
Applications
  • Applications requiring Copper Alloy Body construction
General Description

The Attenuator,fixed, cataloged under National Stock Number 5985-01-037-1726, 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 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-01-037-1726
Primary Part NumberMIL-A-3933/18
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
StatusACTIVE
Application DesignTRANSMISSION LINETRANSMISSION LINE
Attenuation Accuracy in Decibels-0.80 TO 0.80-0.80 TO 0.80
Terminal Type and Quantity2 CONNECTOR2 CONNECTOR
Overall Diameter0.840 INCHES MAXIMUM0.840 INCHES MAXIMUM IN
Output Impedance Rating in Ohms50.050.0
Power Rating2.0 WATTS AVERAGE AND 2.0 WATTS AVERAGE AND 1.0 KILOWATTS PEAK1.0 KILOWATTS PEAK
Frequency Range0.000 HERTZ MINIMUM AND 0.000 HERTZ MINIMUM AND 12.400 GIGAHERTZ MAXIMUM12.400 GIGAHERTZ MAXIMUM
Rf Signal Attenuation in Decibels30.030.0
Input Impedance Rating in Ohms50.050.0
Coaxial Connector Series DesignationNN
Operating Temp Range-55.0 TO 125.0 CELSIUS-55.0 TO 125.0 CELSIUS DEGC
Voltage Standing Wave Ratio Frequency Range+0.0 TO 4.0 GIGAHERTZ AND +0.0 TO 4.0 GIGAHERTZ AND +4.0 TO 8.0 GIGAHERTZ AND +4.0 TO 8.0 GIGAHERTZ AND +8.0 TO 12.4 GIGAHERTZ+8.0 TO 12.4 GIGAHERTZ
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.).
Connection Type Per FunctionFEMALE INPUT AND FEMALE INPUT AND MALE OUTPUTMALE OUTPUT
Voltage Standing Wave Ratio1.15 AND 1.15 AND 1.20 AND 1.20 AND 1.251.25
Mounting MethodCONNECTORCONNECTOR
Body StyleROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACEROUND, TERMINAL/TERMINALS IN OPPOSITE SURFACE
MaterialCOPPER ALLOY BODY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5985-00-817-8431 INTERCHANGEABLE
Attenuator,fixed
5985-01-037-1727 INTERCHANGEABLE
Attenuator,fixed
5985-01-041-6605 INTERCHANGEABLE
Attenuator,fixed
5985-01-048-0174 INTERCHANGEABLE
Attenuator,fixed
5985-01-396-8585 INTERCHANGEABLE
Attenuator,fixed
5985-01-433-9173 INTERCHANGEABLE
Attenuator,fixed
Cross-Reference Index
Part NumberManufacturer
MIL-A-3933/18 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M3933/18-05 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-A-3933/13 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
M3933/13-5 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5985-00-817-8431INTERCHANGEABLE
ATTENUATOR,FIXED
5985-01-037-1727INTERCHANGEABLE
ATTENUATOR,FIXED
5985-01-041-6605INTERCHANGEABLE
ATTENUATOR,FIXED
5985-01-048-0174INTERCHANGEABLE
ATTENUATOR,FIXED
5985-01-396-8585INTERCHANGEABLE
ATTENUATOR,FIXED
5985-01-433-9173INTERCHANGEABLE
ATTENUATOR,FIXED

Frequently Asked Questions

What is NSN 5985-01-037-1726?

NSN 5985-01-037-1726 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: active.

What are the part numbers for NSN 5985-01-037-1726?

NSN 5985-01-037-1726 has 4 cross-referenced part numbers: MIL-A-3933/18 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M3933/18-05 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-A-3933/13 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), M3933/13-5 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 5985-01-037-1726?

There are 6 known substitutes for 5985-01-037-1726: 5985-00-817-8431, 5985-01-037-1727, 5985-01-041-6605 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MIL-A-3933/18?

Key specifications for MIL-A-3933/18: Application Design: TRANSMISSION LINETRANSMISSION LINE; Attenuation Accuracy in Decibels: -0.80 TO 0.80-0.80 TO 0.80; Terminal Type and Quantity: 2 CONNECTOR2 CONNECTOR; Overall Diameter: 0.840 INCHES MAXIMUM0.840 INCHES MAXIMUM IN. 19 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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