PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B-2021Computer Subassembly

L3 Technologies, Inc. · NSN 7021-01-495-4686 · FSC 7021 · Computer,digital
Verified by PartsTable
NSN 7021-01-495-4686 — this item is cataloged by the U.S. Government under National Stock Number 7021-01-495-4686. Primary manufacturer part number: B-2021.
Features
  • Computer Subassembly — FSC 7021
  • 3 verified cross-references
  • Primary manufacturer: L3 Technologies, Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Computer Subassembly, cataloged under National Stock Number 7021-01-495-4686, is classified within Federal Supply Class 7021 (Computer,digital) of the General Purpose ADP Equipment group. The primary manufacturer of record is L3 Technologies, Inc.. This item has 3 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameComputer Subassembly
FSC / FSG7021 — Computer,digital (FSG 70)
ManufacturersL3 Technologies, Inc. (CAGE 28199); L3 Technologies, Inc. (CAGE 09JB5)
Technical Specifications
ParameterValue
NSN7021-01-495-4686
Primary Part NumberB-2021
Item NameComputer Subassembly
FSC / FSG7021 / 70 — Computer,digital
ManufacturerL3 Technologies, Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5330-00-202-3665A314088 INTERCHANGEABLE
Gasket
Naval Ship Systems Command
3110-00-554-3459 INTERCHANGEABLE
Bearing,ball,annular
3120-00-813-7541 INTERCHANGEABLE
Bearing,sleeve
5325-01-044-3489B2021 INTERCHANGEABLE
Ring,retaining
Naval Inventory Control Point Mechanicsburg
4730-01-061-1970B-202-1 INTERCHANGEABLE
Nut,tube Coupling
Swagelok Co
5950-01-250-8466646-6782-001 INTERCHANGEABLE
Coil Assembly,radio Frequency
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5325-01-370-2404 INTERCHANGEABLE
Ring,retaining
4820-01-407-4264B2021 INTERCHANGEABLE
Retainer,disk,valve
Dante Valve Company
Cross-Reference Index
Part NumberManufacturer
B-2021 L3 Technologies, Inc. (USA)
D-3399 REV C ITEM 14 L3 Technologies, Inc. (USA)
B-2021 L3 Technologies, Inc. (USA)
Related Parts
5330-00-202-3665INTERCHANGEABLE
GASKET
A314088
3110-00-554-3459INTERCHANGEABLE
BEARING,BALL,ANNULAR
3120-00-813-7541INTERCHANGEABLE
BEARING,SLEEVE
5325-01-044-3489INTERCHANGEABLE
RING,RETAINING
B2021
4730-01-061-1970INTERCHANGEABLE
NUT,TUBE COUPLING
B-202-1
5950-01-250-8466INTERCHANGEABLE
COIL ASSEMBLY,RADIO FREQUENCY
646-6782-001
5325-01-370-2404INTERCHANGEABLE
RING,RETAINING
4820-01-407-4264INTERCHANGEABLE
RETAINER,DISK,VALVE
B2021

Frequently Asked Questions

What is NSN 7021-01-495-4686?

NSN 7021-01-495-4686 is a Computer Subassembly, manufactured by L3 Technologies, Inc., classified under FSC 7021 (Computer,digital). Status: active.

What are the part numbers for NSN 7021-01-495-4686?

NSN 7021-01-495-4686 has 3 cross-referenced part numbers: B-2021 (L3 Technologies, Inc.), D-3399 REV C ITEM 14 (L3 Technologies, Inc.), B-2021 (L3 Technologies, Inc.).

What NSN replaces 7021-01-495-4686?

There are 8 known substitutes for 7021-01-495-4686: 5330-00-202-3665, 3110-00-554-3459, 3120-00-813-7541 and 5 more. Verify interchangeability with system specifications before substitution.

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