PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

55368Washer,flat

Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple · NSN 5310-00-685-3522 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-685-3522 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-685-3522. Primary manufacturer part number: 55368.
Features
  • Washer,flat — FSC 5310
  • Peripheral Shape Style: ROUND
  • Cross-Sectional Shape Style: RECTANGULAR
  • Material: COPPER ALLOY OVERALL
  • Center Hole Shape Style: ROUND
  • Thickness: 0.031 INCHES NOMINAL IN
  • Hole Diameter: 0.448 INCHES NOMINAL IN
  • Overall Diameter: 0.875 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Copper Alloy Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-685-3522, is classified within Federal Supply Class 5310 (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. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-685-3522
Primary Part Number55368
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
StatusACTIVE
Peripheral Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
MaterialCOPPER ALLOY OVERALL
Center Hole Shape StyleROUND
Thickness0.031 INCHES NOMINAL IN
Hole Diameter0.448 INCHES NOMINAL IN
Overall Diameter0.875 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5330-00-291-91402709-1 INTERCHANGEABLE
Seal,plain Encased
Federal-Mogul Corp Government Sales Dept
5930-01-157-55503001-16-129 INTERCHANGEABLE
Switch,thermostatic
Honeywell International Inc. Dba Honeywell Div Sensing and Control
5360-01-194-607554132 INTERCHANGEABLE
Spring,helical,compression
Malabar
7310-01-279-9547SM-50-7DS INTERCHANGEABLE
Well,hot Food Storage
American Permanent Ware Company Dba Apw/wyott Foodservice Eqp Co
Cross-Reference Index
Part NumberManufacturer
55368 PRIMARY Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (USA)
55368 Northrop Grumman Systems Corporation Div Es Defensive Systems Division (USA)
Related Parts
5330-00-291-9140INTERCHANGEABLE
SEAL,PLAIN ENCASED
2709-1
5930-01-157-5550INTERCHANGEABLE
SWITCH,THERMOSTATIC
3001-16-129
5360-01-194-6075INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
54132
7310-01-279-9547INTERCHANGEABLE
WELL,HOT FOOD STORAGE
SM-50-7DS

Frequently Asked Questions

What is NSN 5310-00-685-3522?

NSN 5310-00-685-3522 is a Washer,flat, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple, classified under FSC 5310 (No Item Name Available). Status: active.

What are the part numbers for NSN 5310-00-685-3522?

NSN 5310-00-685-3522 has 2 cross-referenced part numbers: 55368 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple), 55368 (Northrop Grumman Systems Corporation Div Es Defensive Systems Division).

What NSN replaces 5310-00-685-3522?

There are 4 known substitutes for 5310-00-685-3522: 5330-00-291-9140, 5930-01-157-5550, 5360-01-194-6075 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 55368?

Key specifications for 55368: Peripheral Shape Style: ROUND; Cross-Sectional Shape Style: RECTANGULAR; Material: COPPER ALLOY OVERALL; Center Hole Shape Style: ROUND. 7 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com