PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21020Apex Insulator Assembly

Science Applications International Corporation · NSN 5970-01-298-3310 · FSC 5970 · No Item Name Available
Verified by PartsTable
NSN 5970-01-298-3310 — this item is cataloged by the U.S. Government under National Stock Number 5970-01-298-3310. Primary manufacturer part number: 21020.
Features
  • Apex Insulator Assembly — FSC 5970
  • General Characteristics Item Description: CONSIST OF SUBASSEMBLY,P/N 21027,1; SHEAR PIN,P/N 21023,9; INSULATOR CABLE CLAMP SUBASSY,P/N 21030,1; RUBBER SPACER,P/N 21025,1; CLMP COVER,P/N 21026,1; RETAINER LINE SUBASSY,P/N 21040,1; PLUG,P/N 21021,1
  • 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 Apex Insulator Assembly, cataloged under National Stock Number 5970-01-298-3310, 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. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5970-01-298-3310
Primary Part Number21020
Item NameApex Insulator Assembly
FSC / FSG5970 / 59 — No Item Name Available
ManufacturerScience Applications International Corporation
StatusACTIVE
General Characteristics Item DescriptionCONSIST OF SUBASSEMBLY,P/N 21027,1; SHEAR PIN,P/N 21023,9; INSULATOR CABLE CLAMP SUBASSY,P/N 21030,1; RUBBER SPACER,P/N 21025,1; CLMP COVER,P/N 21026,1; RETAINER LINE SUBASSY,P/N 21040,1; PLUG,P/N 21021,1
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5120-00-061-854421020 INTERCHANGEABLE
Hammer,hand
Nupla Corporation
4730-00-278-2523 INTERCHANGEABLE
Clamp,hose
4820-00-603-869621020 INTERCHANGEABLE
Valve,check
Mission Systems Orchard Park Inc
5985-00-633-0231 INTERCHANGEABLE
Attenuator,fixed
4810-00-688-993921020 INTERCHANGEABLE
Valve,solenoid
Rocker Solenoid Co Dba Rocker Solenoid Co
5905-00-702-0523 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
5935-00-847-9683952141-1 INTERCHANGEABLE
Adapter,connector
Raytheon Company Dba Raytheon Co
4820-01-142-5193 INTERCHANGEABLE
Valve,operator
5365-01-240-06082-1020 INTERCHANGEABLE
Ring,externally Threaded
Malabar
5998-01-295-600321014 INTERCHANGEABLE
Circuit Card Assembly
Giga-Tronics Incorporated Dba Giga-Tronics
Cross-Reference Index
Part NumberManufacturer
21020 PRIMARY Science Applications International Corporation (USA)
Related Parts
5120-00-061-8544INTERCHANGEABLE
HAMMER,HAND
21020
4730-00-278-2523INTERCHANGEABLE
CLAMP,HOSE
4820-00-603-8696INTERCHANGEABLE
VALVE,CHECK
21020
5985-00-633-0231INTERCHANGEABLE
ATTENUATOR,FIXED
4810-00-688-9939INTERCHANGEABLE
VALVE,SOLENOID
21020
5905-00-702-0523INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
5935-00-847-9683INTERCHANGEABLE
ADAPTER,CONNECTOR
952141-1
4820-01-142-5193INTERCHANGEABLE
VALVE,OPERATOR
5365-01-240-0608INTERCHANGEABLE
RING,EXTERNALLY THREADED
2-1020
5998-01-295-6003INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
21014
9340-01-304-9889INTERCHANGEABLE
WINDOW,OBSERVATION
21020
4720-01-329-8602INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
280003

Frequently Asked Questions

What is NSN 5970-01-298-3310?

NSN 5970-01-298-3310 is a Apex Insulator Assembly, manufactured by Science Applications International Corporation, classified under FSC 5970 (No Item Name Available). Status: active.

What are the part numbers for NSN 5970-01-298-3310?

NSN 5970-01-298-3310 has 1 cross-referenced part number: 21020 (Science Applications International Corporation).

What NSN replaces 5970-01-298-3310?

There are 12 known substitutes for 5970-01-298-3310: 5120-00-061-8544, 4730-00-278-2523, 4820-00-603-8696 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21020?

Key specifications for 21020: General Characteristics Item Description: CONSIST OF SUBASSEMBLY,P/N 21027,1; SHEAR PIN,P/N 21023,9; INSULATOR CABLE CLAMP SUBASSY,P/N 21030,1; RUBBER SPACER,P/N 21025,1; CLMP COVER,P/N 21026,1; RETAINER LINE SUBASSY,P/N 21040,1; PLUG,P/N 21021,1. 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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