PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2921825Attenuator,variable

Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier · NSN 5985-00-487-8463 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-487-8463 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-487-8463. Primary manufacturer part number: 2921825.
Features
  • Attenuator,variable — FSC 5985
  • Mounting Facility Pattern: FOUR POSITION RECTANGULAR
  • Waveguide Flange Designation: UG-135/U
  • Operating Temp Range: -20.0 TO 65.0 CELSIUS DEGC
  • Terminal Type and Quantity: 2 FLANGE
  • Attenuation Variation Method: CONTINUOUS
  • Body Style: WAVEGUIDE TYPE
  • Frequency Range: 10.250 GIGAHERTZ MINIMUM AND 10.500 GIGAHERTZ MAXIMUM
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Attenuator,variable, cataloged under National Stock Number 5985-00-487-8463, 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 Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-00-487-8463
Primary Part Number2921825
Item NameAttenuator,variable
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerNavair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
StatusACTIVE
Mounting Facility PatternFOUR POSITION RECTANGULAR
Waveguide Flange DesignationUG-135/U
Operating Temp Range-20.0 TO 65.0 CELSIUS DEGC
Terminal Type and Quantity2 FLANGE
Attenuation Variation MethodCONTINUOUS
Body StyleWAVEGUIDE TYPE
Frequency Range10.250 GIGAHERTZ MINIMUM AND 10.500 GIGAHERTZ MAXIMUM
Insertion Loss at Minimum Attenuation in Maximum Decibels0.5
Overall Attenuation Range in Decibels+0.0 TO 10.0
Unthreaded Mounting Hole Diameter0.169 INCHES NOMINAL IN
Voltage Standing Wave Ratio1.20
Waveguide Flange TypeCHOKE OR COVER
Center to Center Distance Between Mounting Facilities Parallel to Length1.280 INCHES NOMINAL IN
Mounting Facility Type and Quantity4 TERMINAL WITH MOUNTING HOLES
Power Rating8.0 WATTS PEAK
Center to Center Distance Between Mounting Facilities Parallel to Width1.220 INCHES NOMINAL IN
Application DesignWAVEGUIDE
Adjustment Device Type and Quantity1 KNOB
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4320-00-177-305810128-2 INTERCHANGEABLE
Ring,suction Head
Rps-Fl, Inc. Dba Rps Inc
5935-00-252-634164502-000 INTERCHANGEABLE
Cover,electrical Connector
Stromberg-Carlson Corp a Plessey Telecommunications Co
5935-00-617-66311031 INTERCHANGEABLE
Connector,receptacle,electrical
Hdt Expeditionary Systems Inc
2910-00-624-3681 INTERCHANGEABLE
Filter Element,fluid
6110-00-732-66929808 INTERCHANGEABLE
Regulator,voltage
Electric Regulator Corp
2520-00-876-27471928231 INTERCHANGEABLE
Ring,clutch Transmission
Chrysler Realty Company Llc Dba Daimler Chrysler
5120-01-154-70105120-01-154-7010 INTERCHANGEABLE
Screwdriver,flat Tip
General Services Administration Federal Supply Service
3950-01-188-8645 INTERCHANGEABLE
Coupling Half,winch
6530-01-223-07619808 INTERCHANGEABLE
Urinal,incontinent
Hollister Inc
5120-01-399-91209808 INTERCHANGEABLE
Screwdriver,flat Tip
The Stanley Works Dba Stanley Proto
Cross-Reference Index
Part NumberManufacturer
10-1282 Eastern Microwave Corp (USA)
9808 Kevlin Corporation Dba Cobham Sensor Systems Div Kevlin Division (USA)
9808 Frontgrade Technologies Inc. (USA)
2921825 Omega Laboratories Inc (USA)
2921825 PRIMARY Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA)
562579 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
DT-4472 Atlantic Microwave Corporation Div Cobham Electronic Systems (USA)
Related Parts
4320-00-177-3058INTERCHANGEABLE
RING,SUCTION HEAD
10128-2
5935-00-252-6341INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
64502-000
5935-00-617-6631INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
1031
2910-00-624-3681INTERCHANGEABLE
FILTER ELEMENT,FLUID
6110-00-732-6692INTERCHANGEABLE
REGULATOR,VOLTAGE
9808
2520-00-876-2747INTERCHANGEABLE
RING,CLUTCH TRANSMISSION
1928231
5120-01-154-7010INTERCHANGEABLE
SCREWDRIVER,FLAT TIP
5120-01-154-7010
3950-01-188-8645INTERCHANGEABLE
COUPLING HALF,WINCH
6530-01-223-0761INTERCHANGEABLE
URINAL,INCONTINENT
9808
5120-01-399-9120INTERCHANGEABLE
SCREWDRIVER,FLAT TIP
9808
6145-01-546-8175INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
9808
5310-01-613-1303INTERCHANGEABLE
WASHER,SEAL
9808

Frequently Asked Questions

What is NSN 5985-00-487-8463?

NSN 5985-00-487-8463 is a Attenuator,variable, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-00-487-8463?

NSN 5985-00-487-8463 has 7 cross-referenced part numbers: 10-1282 (Eastern Microwave Corp), 9808 (Kevlin Corporation Dba Cobham Sensor Systems Div Kevlin Division), 9808 (Frontgrade Technologies Inc.), 2921825 (Omega Laboratories Inc), 2921825 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier) and 2 more.

What NSN replaces 5985-00-487-8463?

There are 12 known substitutes for 5985-00-487-8463: 4320-00-177-3058, 5935-00-252-6341, 5935-00-617-6631 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 2921825?

Key specifications for 2921825: Mounting Facility Pattern: FOUR POSITION RECTANGULAR; Waveguide Flange Designation: UG-135/U; Operating Temp Range: -20.0 TO 65.0 CELSIUS DEGC; Terminal Type and Quantity: 2 FLANGE. 21 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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