PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

8491B-010Attenuator,fixed

Keysight Technologies Inc · NSN 5985-01-155-1551 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-01-155-1551 — this item is cataloged by the U.S. Government under National Stock Number 5985-01-155-1551. Primary manufacturer part number: 8491B-010.
Features
  • Attenuator,fixed — FSC 5985
  • Rf Signal Attenuation in Decibels: 10.0
  • 12 verified cross-references
  • Primary manufacturer: Keysight Technologies Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Attenuator,fixed, cataloged under National Stock Number 5985-01-155-1551, 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 Keysight Technologies Inc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 12 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5985-01-155-1551
Primary Part Number8491B-010
Item NameAttenuator,fixed
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerKeysight Technologies Inc
StatusCANCELLED
Rf Signal Attenuation in Decibels10.0
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
5985-01-064-93815729-10 INTERCHANGEABLE
Attenuator,fixed
Spectrum Control Inc Div Weinschel
Cross-Reference Index
Part NumberManufacturer
8491B-0PT010 Hewlett-Packard Company Dba HP (USA)
1957723-712-1 Lockheed Martin Corporation Div Rotary and Mission Systems (USA)
8491B-010 Keysight Technologies, Inc. (USA)
HP-8491B-010 Hewlett-Packard Ltd (GBR)
8491B0PT10 Hewlett-Packard Company Dba HP (USA)
6133621 Lockheed Martin Corporation Div Rotary and Mission Systems (USA)
8491B-0PT010 Keysight Technologies, Inc. (USA)
MDC5078S-10 Dal-Tech Devices, Inc. Dba Dal-Tech Devices Inc Div Dal-Tec Devices, Inc (USA)
8491B-0PT010 Keysight Technologies Inc (USA)
8491B-010 PRIMARY Keysight Technologies Inc (USA)
HP-8491B-010 Hewlett-Packard Co Video Communication Div (USA)
43319-461-00-0 British Aerospace Defence Systems Ltd T/a Bae Systems (GBR)
Related Parts
5985-01-064-9381INTERCHANGEABLE
ATTENUATOR,FIXED
5729-10

Frequently Asked Questions

What is NSN 5985-01-155-1551?

NSN 5985-01-155-1551 is a Attenuator,fixed, manufactured by Keysight Technologies Inc, classified under FSC 5985 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5985-01-155-1551?

NSN 5985-01-155-1551 has 12 cross-referenced part numbers: 8491B-0PT010 (Hewlett-Packard Company Dba HP), 1957723-712-1 (Lockheed Martin Corporation Div Rotary and Mission Systems), 8491B-010 (Keysight Technologies, Inc.), HP-8491B-010 (Hewlett-Packard Ltd), 8491B0PT10 (Hewlett-Packard Company Dba HP) and 7 more.

What NSN replaces 5985-01-155-1551?

There is 1 known substitute for 5985-01-155-1551: 5985-01-064-9381. Verify interchangeability with system specifications before substitution.

What are the specifications of 8491B-010?

Key specifications for 8491B-010: Rf Signal Attenuation in Decibels: 10.0. 1 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5985-01-155-1551 still in active supply?

NSN 5985-01-155-1551 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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