PartsTable TECHNICAL DATA SHEET
OCTOBER 2026Technical Data Sheet

66910553-1Spacer,plate

Northrop Grumman Systems Corporation · NSN 5365-01-383-0643 · FSC 5365 · No Item Name Available
Verified by PartsTable
NSN 5365-01-383-0643 — this item is cataloged by the U.S. Government under National Stock Number 5365-01-383-0643. Primary manufacturer part number: 66910553-1.
Features
  • Spacer,plate — FSC 5365
  • Surface Treatment Document and Classification: 2020, CAGEC 34860 MFR REF SINGLE TREATMENT RESPONSE
  • Overall Thickness: 0.185 INCHES NOMINAL IN
  • Style Designator: NON-CIRCULAR W/O BOLT HOLES
  • Outside Corner Bevel Length Along Width: 0.030 INCHES NOMINAL IN
  • Outside Corner Bevel Length Along Length: 0.030 INCHES NOMINAL IN
  • Surface Treatment: PASSIVATE
  • Material: STEEL
Applications
  • Applications requiring Steel construction
General Description

The Spacer,plate, cataloged under National Stock Number 5365-01-383-0643, 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. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the government interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5365-01-383-0643
Primary Part Number66910553-1
Item NameSpacer,plate
FSC / FSG5365 / 53 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation
StatusACTIVE
Surface Treatment Document and Classification2020, CAGEC 34860 MFR REF SINGLE TREATMENT RESPONSE
Overall Thickness0.185 INCHES NOMINAL IN
Style DesignatorNON-CIRCULAR W/O BOLT HOLES
Outside Corner Bevel Length Along Width0.030 INCHES NOMINAL IN
Outside Corner Bevel Length Along Length0.030 INCHES NOMINAL IN
Surface TreatmentPASSIVATE
MaterialSTEEL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
⇄ Verified Substitutes 8
No Item Name Available
No Item Name Available
5365-00-001-12928200931 SAME_FSC
Plug,machine Thread
No Item Name Available
5365-00-001-1841123CSM51841-11 SAME_FSC
Ring,torque,tube,inboard,rudder
No Item Name Available
No Item Name Available
No Item Name Available
Cross-Reference Index
Part NumberManufacturer
66910553-1 PRIMARY Northrop Grumman Systems Corporation (USA)
Related Parts
5365-00-000-6078INTERCHANGEABLE
NO ITEM NAME AVAILABLE
5365-00-000-7436INTERCHANGEABLE
NO ITEM NAME AVAILABLE
5365-00-001-1292INTERCHANGEABLE
PLUG,MACHINE THREAD
8200931
5365-00-001-1365INTERCHANGEABLE
NO ITEM NAME AVAILABLE
5365-00-001-1841INTERCHANGEABLE
RING,TORQUE,TUBE,INBOARD,RUDDER
123CSM51841-11
5365-00-001-1915INTERCHANGEABLE
NO ITEM NAME AVAILABLE
5365-00-001-1916INTERCHANGEABLE
NO ITEM NAME AVAILABLE
5365-00-001-1940INTERCHANGEABLE
NO ITEM NAME AVAILABLE

Frequently Asked Questions

What is NSN 5365-01-383-0643?

NSN 5365-01-383-0643 is a Spacer,plate, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5365 (No Item Name Available). Status: active.

What are the part numbers for NSN 5365-01-383-0643?

NSN 5365-01-383-0643 has 1 cross-referenced part number: 66910553-1 (Northrop Grumman Systems Corporation).

What NSN replaces 5365-01-383-0643?

There are 8 known substitutes for 5365-01-383-0643: 5365-00-000-6078, 5365-00-000-7436, 5365-00-001-1292 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 66910553-1?

Key specifications for 66910553-1: Surface Treatment Document and Classification: 2020, CAGEC 34860 MFR REF SINGLE TREATMENT RESPONSE; Overall Thickness: 0.185 INCHES NOMINAL IN; Style Designator: NON-CIRCULAR W/O BOLT HOLES; Overall Length: 0.230 INCHES MINIMUM AND 0.235 INCHES MAXIMUM IN. 9 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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