PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51231Spacer

Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple · NSN 5365-01-177-9667 · FSC 5365 · No Item Name Available
Verified by PartsTable
NSN 5365-01-177-9667 — this item is cataloged by the U.S. Government under National Stock Number 5365-01-177-9667. Primary manufacturer part number: 51231.
Features
  • Spacer — FSC 5365
  • 3 verified cross-references
  • Primary manufacturer: Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
Applications
  • General assembly and fastening
  • Structural repair and reinforcement
  • Facility maintenance hardware
General Description

The Spacer, cataloged under National Stock Number 5365-01-177-9667, 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 Northrop Grumman Systems Corp Div Multiple. This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSpacer
FSC / FSG5365 — No Item Name Available (FSG 53)
ManufacturersShugart Associates Sub of Xerox Corp (CAGE 56481); Northrop Grumman Systems Corporation Div Es Defensive Systems Division (CAGE 15280); Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (CAGE 26916)
Technical Specifications
ParameterValue
NSN5365-01-177-9667
Primary Part Number51231
Item NameSpacer
FSC / FSG5365 / 53 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
4720-00-423-0043 INTERCHANGEABLE
Hose Assembly,nonmetallic
4730-00-569-5462KC162-7D INTERCHANGEABLE
Ring,seal,pipe
John F Kennedy Space Center Dba Nasa Div Kennedy Space Center
4730-00-569-5490KC162-2D INTERCHANGEABLE
Ring,seal,pipe
John F Kennedy Space Center Dba Nasa Div Kennedy Space Center
5342-00-803-12016842 INTERCHANGEABLE
Coupling,clamp,grooved
Safran Electronics & Defense, Avionics Usa, Llc Dba Use CAGE Code 879b2 for Cataloging
5330-01-312-3783A5123190 INTERCHANGEABLE
Gasket
Leslie Controls, Inc. Dba Leslie Controls Inc
5210-01-509-9274255Z-18 INTERCHANGEABLE
Gage,height
L.s. Starrett Company (the) Div Tool Division
2510-01-670-36975123-1 INTERCHANGEABLE
Stop,mechanical
Tru-Hitch, Inc.
Cross-Reference Index
Part NumberManufacturer
51231 Shugart Associates Sub of Xerox Corp (USA)
51231 Northrop Grumman Systems Corporation Div Es Defensive Systems Division (USA)
51231 PRIMARY Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (USA)
Related Parts
4720-00-423-0043INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
4730-00-569-5462INTERCHANGEABLE
RING,SEAL,PIPE
KC162-7D
4730-00-569-5490INTERCHANGEABLE
RING,SEAL,PIPE
KC162-2D
5342-00-803-1201INTERCHANGEABLE
COUPLING,CLAMP,GROOVED
6842
5330-01-312-3783INTERCHANGEABLE
GASKET
A5123190
5210-01-509-9274INTERCHANGEABLE
GAGE,HEIGHT
255Z-18
2510-01-670-3697INTERCHANGEABLE
STOP,MECHANICAL
5123-1

Frequently Asked Questions

What is NSN 5365-01-177-9667?

NSN 5365-01-177-9667 is a Spacer, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple, classified under FSC 5365 (No Item Name Available). Status: active.

What are the part numbers for NSN 5365-01-177-9667?

NSN 5365-01-177-9667 has 3 cross-referenced part numbers: 51231 (Shugart Associates Sub of Xerox Corp), 51231 (Northrop Grumman Systems Corporation Div Es Defensive Systems Division), 51231 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple).

What NSN replaces 5365-01-177-9667?

There are 7 known substitutes for 5365-01-177-9667: 4720-00-423-0043, 4730-00-569-5462, 4730-00-569-5490 and 4 more. Verify interchangeability with system specifications before substitution.

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