PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20491Spacer,ring

Northrop Grumman Systems Corporation Dba Aerospace Systems Div Aeronautics Systems · NSN 5365-00-996-0679 · FSC 5365 · No Item Name Available
Verified by PartsTable
NSN 5365-00-996-0679 — this item is cataloged by the U.S. Government under National Stock Number 5365-00-996-0679. Primary manufacturer part number: 20491.
Features
  • Spacer,ring — FSC 5365
  • 1 verified cross-reference
  • Primary manufacturer: Northrop Grumman Systems Corporation Dba Aerospace Systems Div Aeronautics Systems
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Spacer,ring, cataloged under National Stock Number 5365-00-996-0679, is classified within Federal Supply Class 5365 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Northrop Grumman Systems Corporation Dba Aerospace Systems Div Aeronautics Systems. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSpacer,ring
FSC / FSG5365 — No Item Name Available (FSG 53)
ManufacturersNorthrop Grumman Systems Corporation Dba Aerospace Systems Div Aeronautics Systems (CAGE 77646)
Technical Specifications
ParameterValue
NSN5365-00-996-0679
Primary Part Number20491
Item NameSpacer,ring
FSC / FSG5365 / 53 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation Dba Aerospace Systems Div Aeronautics Systems
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5935-00-221-9212 INTERCHANGEABLE
Connector,plug,electrical
3895-00-718-372358239 INTERCHANGEABLE
Sprinkler Mat Assembly
Dressta North America Ltd
5342-01-115-1747 INTERCHANGEABLE
Coupling
5950-01-416-57717137806-0001 INTERCHANGEABLE
Reactor
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5306-01-498-385891264A585 INTERCHANGEABLE
Bolt,internal Wrenching
Mcmaster-Carr Supply Co
1005-01-601-558620491 INTERCHANGEABLE
Guard,trigger
Charles Reed Knight Jr Dba Knight's Armament Company
Cross-Reference Index
Part NumberManufacturer
20491 PRIMARY Northrop Grumman Systems Corporation Dba Aerospace Systems Div Aeronautics Systems (USA)
Related Parts
5935-00-221-9212INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
3895-00-718-3723INTERCHANGEABLE
SPRINKLER MAT ASSEMBLY
58239
5342-01-115-1747INTERCHANGEABLE
COUPLING
5950-01-416-5771INTERCHANGEABLE
REACTOR
7137806-0001
5306-01-498-3858INTERCHANGEABLE
BOLT,INTERNAL WRENCHING
91264A585
1005-01-601-5586INTERCHANGEABLE
GUARD,TRIGGER
20491

Frequently Asked Questions

What is NSN 5365-00-996-0679?

NSN 5365-00-996-0679 is a Spacer,ring, manufactured by Northrop Grumman Systems Corporation Dba Aerospace Systems Div Aeronautics Systems, classified under FSC 5365 (No Item Name Available). Status: active.

What are the part numbers for NSN 5365-00-996-0679?

NSN 5365-00-996-0679 has 1 cross-referenced part number: 20491 (Northrop Grumman Systems Corporation Dba Aerospace Systems Div Aeronautics Systems).

What NSN replaces 5365-00-996-0679?

There are 6 known substitutes for 5365-00-996-0679: 5935-00-221-9212, 3895-00-718-3723, 5342-01-115-1747 and 3 more. Verify interchangeability with system specifications before substitution.

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