PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21122-1Plate,antenna Mast

Science Applications International Corporation · NSN 5985-01-387-7694 · FSC 5985 · No Item Name Available
Verified by PartsTable
NSN 5985-01-387-7694 — this item is cataloged by the U.S. Government under National Stock Number 5985-01-387-7694. Primary manufacturer part number: 21122-1.
Features
  • Plate,antenna Mast — FSC 5985
  • 1 verified cross-reference
  • Primary manufacturer: Science Applications International Corporation
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Plate,antenna Mast, cataloged under National Stock Number 5985-01-387-7694, 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 Science Applications International Corporation. This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN5985-01-387-7694
Primary Part Number21122-1
Item NamePlate,antenna Mast
FSC / FSG5985 / 59 — No Item Name Available
ManufacturerScience Applications International Corporation
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
6550-00-153-8833211221 INTERCHANGEABLE
Culture Medium,eosin Methylene B
Becton, Dickinson and Company Dba Becton Dickinson & Co
6105-00-241-5239211221 INTERCHANGEABLE
Motor,direct Current
Naval Ship Systems Command
5133-01-095-6618 INTERCHANGEABLE
Drill,twist
7035-01-095-827521122-1 INTERCHANGEABLE
Cable Assy Channels
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
5340-01-506-41942112-21 INTERCHANGEABLE
Plate,mounting
Polartherm Oy Dba Thermogate
Cross-Reference Index
Part NumberManufacturer
21122-1 PRIMARY Science Applications International Corporation (USA)
Related Parts
6550-00-153-8833INTERCHANGEABLE
CULTURE MEDIUM,EOSIN METHYLENE B
211221
6105-00-241-5239INTERCHANGEABLE
MOTOR,DIRECT CURRENT
211221
5133-01-095-6618INTERCHANGEABLE
DRILL,TWIST
7035-01-095-8275INTERCHANGEABLE
CABLE ASSY CHANNELS
21122-1
5340-01-506-4194INTERCHANGEABLE
PLATE,MOUNTING
2112-21

Frequently Asked Questions

What is NSN 5985-01-387-7694?

NSN 5985-01-387-7694 is a Plate,antenna Mast, manufactured by Science Applications International Corporation, classified under FSC 5985 (No Item Name Available). Status: active.

What are the part numbers for NSN 5985-01-387-7694?

NSN 5985-01-387-7694 has 1 cross-referenced part number: 21122-1 (Science Applications International Corporation).

What NSN replaces 5985-01-387-7694?

There are 5 known substitutes for 5985-01-387-7694: 6550-00-153-8833, 6105-00-241-5239, 5133-01-095-6618 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21122-1?

Key specifications for 21122-1: End Item Identification: USED ON AS-5199/U FAN ANTENNA SYSTEM. 1 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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