PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4572BAttenuator,variable

Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq · NSN 5985-01-397-2039 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-01-397-2039 — this item is cataloged by the U.S. Government under National Stock Number 5985-01-397-2039. Primary manufacturer part number: 4572B.
Features
  • Attenuator,variable — FSC 5985
  • Coaxial Connector Series Designation: SMA
  • Insertion Loss at Minimum Attenuation in Maximum Decibels: 0.4
  • Application Design: TRANSMISSION LINE
  • Terminal Type and Quantity: 1 CONNECTOR, COAXIAL, FEMALE AND 1 CONNECTOR, COAXIAL, MALE
  • Frequency Range: 3.000 GIGAHERTZ MINIMUM AND 18.000 GIGAHERTZ MAXIMUM
  • Mounting Facility Type and Quantity: 2 CONNECTOR
  • Adjustment Device Type and Quantity: 1 ELECTRONIC, VOLTAGE CONTROLLED
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Attenuator,variable, cataloged under National Stock Number 5985-01-397-2039, 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 Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq. Government technical data includes 10 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-01-397-2039
Primary Part Number4572B
Item NameAttenuator,variable
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerNarda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq
StatusACTIVE
Coaxial Connector Series DesignationSMA
Insertion Loss at Minimum Attenuation in Maximum Decibels0.4
Application DesignTRANSMISSION LINE
Terminal Type and Quantity1 CONNECTOR, COAXIAL, FEMALE AND 1 CONNECTOR, COAXIAL, MALE
Frequency Range3.000 GIGAHERTZ MINIMUM AND 18.000 GIGAHERTZ MAXIMUM
Mounting Facility Type and Quantity2 CONNECTOR
Adjustment Device Type and Quantity1 ELECTRONIC, VOLTAGE CONTROLLED
Body StyleIRREGULAR
Attenuation Variation MethodCONTINUOUS
Voltage Standing Wave Ratio1.35
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4310-00-336-53794572B INTERCHANGEABLE
Shell Assy,cooler
Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions
5940-00-915-6128 INTERCHANGEABLE
Terminal,stud
Cross-Reference Index
Part NumberManufacturer
4572B PRIMARY Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq (USA)
Related Parts
4310-00-336-5379INTERCHANGEABLE
SHELL ASSY,COOLER
4572B
5940-00-915-6128INTERCHANGEABLE
TERMINAL,STUD

Frequently Asked Questions

What is NSN 5985-01-397-2039?

NSN 5985-01-397-2039 is a Attenuator,variable, manufactured by Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-01-397-2039?

NSN 5985-01-397-2039 has 1 cross-referenced part number: 4572B (Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq).

What NSN replaces 5985-01-397-2039?

There are 2 known substitutes for 5985-01-397-2039: 4310-00-336-5379, 5940-00-915-6128. Verify interchangeability with system specifications before substitution.

What are the specifications of 4572B?

Key specifications for 4572B: Coaxial Connector Series Designation: SMA; Insertion Loss at Minimum Attenuation in Maximum Decibels: 0.4; Application Design: TRANSMISSION LINE; Terminal Type and Quantity: 1 CONNECTOR, COAXIAL, FEMALE AND 1 CONNECTOR, COAXIAL, MALE. 13 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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