PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8921Attenuator,fixed

Bird Electronic Corporation Div Bird Electronic Corp · NSN 5985-01-726-1256 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-01-726-1256 — this item is cataloged by the U.S. Government under National Stock Number 5985-01-726-1256. Primary manufacturer part number: 8921.
Features
  • Attenuator,fixed — FSC 5985
  • Power Rating: 5.0 KILOWATTS AVERAGE
  • Mounting Method: BRACKET(S)
  • Coaxial Connector Series Designation: QC
  • Unpackaged Unit Weight: 119.0 POUNDS LBS
  • Operating Temp Range: -40.0 TO 45.0 CELSIUS DEGC
  • Rf Signal Attenuation in Decibels: 30.0
  • Mounting Hole/stud Quantity: 4
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Attenuator,fixed, cataloged under National Stock Number 5985-01-726-1256, 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 Bird Electronic Corporation Div Bird Electronic Corp. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-01-726-1256
Primary Part Number8921
Item NameAttenuator,fixed
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerBird Electronic Corporation Div Bird Electronic Corp
StatusACTIVE
Power Rating5.0 KILOWATTS AVERAGE
Mounting MethodBRACKET(S)
Coaxial Connector Series DesignationQC
Unpackaged Unit Weight119.0 POUNDS LBS
Operating Temp Range-40.0 TO 45.0 CELSIUS DEGC
Rf Signal Attenuation in Decibels30.0
Mounting Hole/stud Quantity4
Attenuation Accuracy Reference Frequency1.0 GIGAHERTZ
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5975-00-345-0679 INTERCHANGEABLE
Arm,cable Extension
6105-00-635-9718 INTERCHANGEABLE
Motor,direct Current
6685-01-407-8391 INTERCHANGEABLE
Gage,pressure,dial Indicating
Cross-Reference Index
Part NumberManufacturer
8921 PRIMARY Bird Electronic Corporation Div Bird Electronic Corp (USA)
8921 Bird Electronic Corp (USA)
Related Parts
5975-00-345-0679INTERCHANGEABLE
ARM,CABLE EXTENSION
6105-00-635-9718INTERCHANGEABLE
MOTOR,DIRECT CURRENT
6685-01-407-8391INTERCHANGEABLE
GAGE,PRESSURE,DIAL INDICATING

Frequently Asked Questions

What is NSN 5985-01-726-1256?

NSN 5985-01-726-1256 is a Attenuator,fixed, manufactured by Bird Electronic Corporation Div Bird Electronic Corp, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-01-726-1256?

NSN 5985-01-726-1256 has 2 cross-referenced part numbers: 8921 (Bird Electronic Corporation Div Bird Electronic Corp), 8921 (Bird Electronic Corp).

What NSN replaces 5985-01-726-1256?

There are 3 known substitutes for 5985-01-726-1256: 5975-00-345-0679, 6105-00-635-9718, 6685-01-407-8391. Verify interchangeability with system specifications before substitution.

What are the specifications of 8921?

Key specifications for 8921: Part Name Assigned by Controlling Agency: OIL-DIELECTRIC LOADS; Overall Height: 25.813 INCHES NOMINAL IN; Power Rating: 5.0 KILOWATTS AVERAGE; Mounting Method: BRACKET(S). 14 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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