PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21052Insulator,spreader

Science Applications International Corporation · NSN 5970-01-388-5353 · FSC 5970 · No Item Name Available
Verified by PartsTable
NSN 5970-01-388-5353 — this item is cataloged by the U.S. Government under National Stock Number 5970-01-388-5353. Primary manufacturer part number: 21052.
Features
  • Insulator,spreader — FSC 5970
  • 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 Insulator,spreader, cataloged under National Stock Number 5970-01-388-5353, is classified within Federal Supply Class 5970 (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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5970-01-388-5353
Primary Part Number21052
Item NameInsulator,spreader
FSC / FSG5970 / 59 — No Item Name Available
ManufacturerScience Applications International Corporation
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
4730-00-134-422221052 INTERCHANGEABLE
Clamp,hose
Norma Pennsylvania Inc. Div Breeze Industrial Products
5310-00-261-734000103321 INTERCHANGEABLE
Washer,lock
Rolls-Royce Solutions America Inc
5950-00-295-7823044-2968-01 INTERCHANGEABLE
Reactor
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5945-00-542-0983 INTERCHANGEABLE
Relay,electromagnetic
6625-00-855-595410548236 INTERCHANGEABLE
Indicator,radio Frequency
Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate
5935-01-092-9293 INTERCHANGEABLE
Adapter,connector
5841-01-100-496221052 INTERCHANGEABLE
Plate,mounting,indicator
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
5975-01-291-03610021050230 INTERCHANGEABLE
Rack,post
Newton Instrument Company Dba Newton Instrument Co
4820-01-513-974021052-001 INTERCHANGEABLE
Valve,restrictor Check
Sargent Aerospace & Defense, Llc Dba Sargent Controls & Aerospace Div Sargent Controls & Aerospace
6525-01-592-9473EZCR/DR DIN INTERCHANGEABLE
Test Tool,reader,computed Radiog
Icrco, Inc.
Cross-Reference Index
Part NumberManufacturer
21052 PRIMARY Science Applications International Corporation (USA)
Related Parts
4730-00-134-4222INTERCHANGEABLE
CLAMP,HOSE
21052
5310-00-261-7340INTERCHANGEABLE
WASHER,LOCK
00103321
5950-00-295-7823INTERCHANGEABLE
REACTOR
044-2968-01
5945-00-542-0983INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
6625-00-855-5954INTERCHANGEABLE
INDICATOR,RADIO FREQUENCY
10548236
5935-01-092-9293INTERCHANGEABLE
ADAPTER,CONNECTOR
5841-01-100-4962INTERCHANGEABLE
PLATE,MOUNTING,INDICATOR
21052
5975-01-291-0361INTERCHANGEABLE
RACK,POST
0021050230
4820-01-513-9740INTERCHANGEABLE
VALVE,RESTRICTOR CHECK
21052-001
6525-01-592-9473INTERCHANGEABLE
TEST TOOL,READER,COMPUTED RADIOG
EZCR/DR DIN

Frequently Asked Questions

What is NSN 5970-01-388-5353?

NSN 5970-01-388-5353 is a Insulator,spreader, manufactured by Science Applications International Corporation, classified under FSC 5970 (No Item Name Available). Status: active.

What are the part numbers for NSN 5970-01-388-5353?

NSN 5970-01-388-5353 has 1 cross-referenced part number: 21052 (Science Applications International Corporation).

What NSN replaces 5970-01-388-5353?

There are 10 known substitutes for 5970-01-388-5353: 4730-00-134-4222, 5310-00-261-7340, 5950-00-295-7823 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21052?

Key specifications for 21052: End Item Identification: LIGHTWEIGHT BROADBAND HF COMMUNICATIONS ANTENNA (LWCA). 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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