PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

23877Attenuator,variable

Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq · NSN 5985-00-188-8163 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-188-8163 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-188-8163. Primary manufacturer part number: 23877.
Features
  • Attenuator,variable — FSC 5985
  • Body Style: COAXIAL TYPE
  • Power Rating: 2.0 WATTS AVERAGE
  • Segment Attenuation Range in Decibels: +0.00 TO 10.00 AND +10.00 TO 20.00 AND +20.00 TO 30.00 AND +30.00 TO 40.00 AND +40.00 TO 50.00 AND +50.00 TO 60.00 AND +60.00 TO 70.00 AND +70.00 TO 80.00 AND +80.00 TO 90.00 AND +90.00 TO 100.00 AND +100.00 TO 110.00 AND +110.00 TO 120.00
  • Mounting Thread Quantity: 32 PER INCH
  • Insertion Loss at Minimum Attenuation in Maximum Decibels: 0.8
  • Attenuation Variation Method: STEPPED
  • Mounting Facility Nominal Screw Thread Diameter: 0.138 INCHES IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Attenuator,variable, cataloged under National Stock Number 5985-00-188-8163, 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 21 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 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
NSN5985-00-188-8163
Primary Part Number23877
Item NameAttenuator,variable
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerNarda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq
StatusACTIVE
Body StyleCOAXIAL TYPE
Power Rating2.0 WATTS AVERAGE
Segment Attenuation Range in Decibels+0.00 TO 10.00 AND +10.00 TO 20.00 AND +20.00 TO 30.00 AND +30.00 TO 40.00 AND +40.00 TO 50.00 AND +50.00 TO 60.00 AND +60.00 TO 70.00 AND +70.00 TO 80.00 AND +80.00 TO 90.00 AND +90.00 TO 100.00 AND +100.00 TO 110.00 AND +110.00 TO 120.00
Mounting Thread Quantity32 PER INCH
Insertion Loss at Minimum Attenuation in Maximum Decibels0.8
Attenuation Variation MethodSTEPPED
Mounting Facility Nominal Screw Thread Diameter0.138 INCHES IN
Voltage Standing Wave Ratio1.60
Overall Attenuation Accuracy in Decibels-1.00 TO 1.00
Scale LinearityLINEAR
Mounting Facility Type and Quantity8 THREADED HOLE(S)
Overall Attenuation Range in Decibels+0.0 TO 120.0
Adjustment Device Type and Quantity2 KNOB
Application DesignTRANSMISSION LINE
Segment Attenuation Accuracy in Decibels-0.60 TO 0.60 AND -0.80 TO 0.80 AND -1.00 TO 1.00 AND -1.10 TO 1.10 AND -1.30 TO 1.30 AND -1.50 TO 1.50 AND -2.10 TO 2.10 AND -2.30 TO 2.30 AND -2.50 TO 2.50 AND -3.00 TO 3.00 AND -3.30 TO 3.30 AND -3.60 TO 3.60
Step Position Quantity12
Coaxial Connector Series DesignationN
Mounting Facility Screw Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Terminal Type and Quantity2 CONNECTOR, COAXIAL, FEMALE
Attenuation Per Step in Decibels10.0
Frequency Range0.000 HERTZ MINIMUM AND 12.400 GIGAHERTZ MAXIMUM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
4730-00-069-1186SAE J246 6-4 120102BA INTERCHANGEABLE
Adapter,straight,pipe to Tube
Sae International Dba Sae International
5315-00-565-5397N182 INTERCHANGEABLE
Key,machine
Circor Naval Solutions Llc Dba Warren Pumps
4810-00-718-1906 INTERCHANGEABLE
Button,valve Diaphragm
4320-01-486-0685XL1-1/2A INTERCHANGEABLE
Pump,rotary
Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
9140-01-564-1907ISO 8217(3) INTERCHANGEABLE
Fuel Oil,intermediate
International Organization for Standardization (iso)
Cross-Reference Index
Part NumberManufacturer
415176 Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq (USA)
23877 PRIMARY Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq (USA)
N182 General Microwave Corporation Div Kratos Microwave Electronics (USA)
205053 Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq (USA)
Related Parts
4730-00-069-1186INTERCHANGEABLE
ADAPTER,STRAIGHT,PIPE TO TUBE
SAE J246 6-4 120102BA
5315-00-565-5397INTERCHANGEABLE
KEY,MACHINE
N182
4810-00-718-1906INTERCHANGEABLE
BUTTON,VALVE DIAPHRAGM
4320-01-486-0685INTERCHANGEABLE
PUMP,ROTARY
XL1-1/2A
9140-01-564-1907INTERCHANGEABLE
FUEL OIL,INTERMEDIATE
ISO 8217(3)

Frequently Asked Questions

What is NSN 5985-00-188-8163?

NSN 5985-00-188-8163 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 5985-00-188-8163?

NSN 5985-00-188-8163 has 4 cross-referenced part numbers: 415176 (Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq), 23877 (Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq), N182 (General Microwave Corporation Div Kratos Microwave Electronics), 205053 (Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq).

What NSN replaces 5985-00-188-8163?

There are 5 known substitutes for 5985-00-188-8163: 4730-00-069-1186, 5315-00-565-5397, 4810-00-718-1906 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 23877?

Key specifications for 23877: Body Style: COAXIAL TYPE; Power Rating: 2.0 WATTS AVERAGE; Segment Attenuation Range in Decibels: +0.00 TO 10.00 AND +10.00 TO 20.00 AND +20.00 TO 30.00 AND +30.00 TO 40.00 AND +40.00 TO 50.00 AND +50.00 TO 60.00 AND +60.00 TO 70.00 AND +70.00 TO 80.00 AND +80.00 TO 90.00 AND +90.00 TO 100.00 AND +100.00 TO 110.00 AND +110.00 TO 120.00; Mounting Thread Quantity: 32 PER INCH. 24 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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