PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

212A19BAttenuator,variable

Keysight Technologies Inc · NSN 5985-00-201-7400 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-00-201-7400 — this item is cataloged by the U.S. Government under National Stock Number 5985-00-201-7400. Primary manufacturer part number: 212A19B.
Features
  • Attenuator,variable — FSC 5985
  • Mounting Facility Screw Thread Series Designator: UNEF
  • Overall Diameter: 1.875 INCHES NOMINAL IN
  • Impedance Rating in Ohms: 50.0 OUTPUT
  • Power Rating: 2.0 WATTS AVERAGE
  • Mounting Facility Nominal Screw Thread Diameter: 0.375 INCHES IN
  • Bushing Length: 0.500 INCHES NOMINAL IN
  • Mounting Facility Type and Quantity: 1 THREADED BUSHING
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Attenuator,variable, cataloged under National Stock Number 5985-00-201-7400, 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 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5985-00-201-7400
Primary Part Number212A19B
Item NameAttenuator,variable
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerKeysight Technologies Inc
StatusACTIVE
Mounting Facility Screw Thread Series DesignatorUNEF
Overall Diameter1.875 INCHES NOMINAL IN
Impedance Rating in Ohms50.0 OUTPUT
Power Rating2.0 WATTS AVERAGE
Mounting Facility Nominal Screw Thread Diameter0.375 INCHES IN
Bushing Length0.500 INCHES NOMINAL IN
Mounting Facility Type and Quantity1 THREADED BUSHING
Frequency Range0.000 MEGAHERTZ MINIMUM AND 30.000 MEGAHERTZ MAXIMUM
Attenuation Variation MethodSTEPPED
Application DesignTRANSMISSION LINE
Overall Attenuation Accuracy in Decibels-1.00 TO 1.00
Step Position Quantity5
Mounting Thread Quantity32 PER INCH
Overall Attenuation Range in Decibels+0.0 TO 50.0
Attenuation Per Step in Decibels10.0
Terminal Type and Quantity3 TAB, SOLDER LUG
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
4820-00-200-0664CFA40614 INTERCHANGEABLE
Valve,globe
Curtis Dyna-Fog, Ltd.
5305-00-655-9994 INTERCHANGEABLE
Setscrew
5999-01-067-1118 INTERCHANGEABLE
Mounting Pad,electrical-Electron
5999-01-070-6408 INTERCHANGEABLE
Mounting Pad,electrical-Electron
5310-01-278-9565 INTERCHANGEABLE
Washer,lock
4320-01-297-030010247 INTERCHANGEABLE
Parts Kit,reciprocating Pump
Itw Food Equipment Group Llc Dba Gaylord Industries
4310-01-307-917010247 INTERCHANGEABLE
Sleeve Assembly
Poly-Craft Systems Div of Binks Mfg Co
7530-01-412-926210247 INTERCHANGEABLE
Folder,file
Smead Manufacturing Company, the Div Smeadsoft
5360-01-463-276610247 INTERCHANGEABLE
Spring,helical,compression
Matthew Warren, Inc. Dba Century Spring Corp. Div Century Spring Corp.
1005-01-722-842110-247 INTERCHANGEABLE
Rod Assembly,operating,gun
Geissele Automatics Llc
Cross-Reference Index
Part NumberManufacturer
10247 Freund Precision Inc (USA)
212A19B Hewlett-Packard Company Dba HP (USA)
BP5135 Burke Products Inc (USA)
212A19B Keysight Technologies, Inc. (USA)
356LX Burke Products Inc (USA)
212A19B PRIMARY Keysight Technologies Inc (USA)
Related Parts
4820-00-200-0664INTERCHANGEABLE
VALVE,GLOBE
CFA40614
5305-00-655-9994INTERCHANGEABLE
SETSCREW
5999-01-067-1118INTERCHANGEABLE
MOUNTING PAD,ELECTRICAL-ELECTRON
5999-01-070-6408INTERCHANGEABLE
MOUNTING PAD,ELECTRICAL-ELECTRON
5310-01-278-9565INTERCHANGEABLE
WASHER,LOCK
4320-01-297-0300INTERCHANGEABLE
PARTS KIT,RECIPROCATING PUMP
10247
4310-01-307-9170INTERCHANGEABLE
SLEEVE ASSEMBLY
10247
7530-01-412-9262INTERCHANGEABLE
FOLDER,FILE
10247
5360-01-463-2766INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
10247
1005-01-722-8421INTERCHANGEABLE
ROD ASSEMBLY,OPERATING,GUN
10-247

Frequently Asked Questions

What is NSN 5985-00-201-7400?

NSN 5985-00-201-7400 is a Attenuator,variable, manufactured by Keysight Technologies Inc, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-00-201-7400?

NSN 5985-00-201-7400 has 6 cross-referenced part numbers: 10247 (Freund Precision Inc), 212A19B (Hewlett-Packard Company Dba HP), BP5135 (Burke Products Inc), 212A19B (Keysight Technologies, Inc.), 356LX (Burke Products Inc) and 1 more.

What NSN replaces 5985-00-201-7400?

There are 10 known substitutes for 5985-00-201-7400: 4820-00-200-0664, 5305-00-655-9994, 5999-01-067-1118 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 212A19B?

Key specifications for 212A19B: Mounting Facility Screw Thread Series Designator: UNEF; Overall Diameter: 1.875 INCHES NOMINAL IN; Impedance Rating in Ohms: 50.0 OUTPUT; Power Rating: 2.0 WATTS AVERAGE. 16 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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