PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

55369Washer,flat

Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple · NSN 5310-00-618-9529 · FSC 5310 · No Item Name Available
Verified by PartsTable
NSN 5310-00-618-9529 — this item is cataloged by the U.S. Government under National Stock Number 5310-00-618-9529. Primary manufacturer part number: 55369.
Features
  • Washer,flat — FSC 5310
  • Material: STEEL OVERALL
  • Surface Finish: 63.0 MICROINCHES ALL SURFACES
  • Surface Treatment: CADMIUM OVERALL
  • Peripheral Shape Style: ROUND
  • Cross-Sectional Shape Style: RECTANGULAR
  • Center Hole Shape Style: ROUND
  • Thickness: 0.035 INCHES NOMINAL IN
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Steel Overall construction
General Description

The Washer,flat, cataloged under National Stock Number 5310-00-618-9529, 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 9 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5310-00-618-9529
Primary Part Number55369
Item NameWasher,flat
FSC / FSG5310 / 53 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
StatusACTIVE
MaterialSTEEL OVERALL
Surface Finish63.0 MICROINCHES ALL SURFACES
Surface TreatmentCADMIUM OVERALL
Peripheral Shape StyleROUND
Cross-Sectional Shape StyleRECTANGULAR
Center Hole Shape StyleROUND
Thickness0.035 INCHES NOMINAL IN
Overall Diameter0.875 INCHES NOMINAL IN
Hole Diameter0.448 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5330-00-641-2330 INTERCHANGEABLE
Seal,plain Encased
7310-01-478-3538SM-50-11DS/120V-500W INTERCHANGEABLE
Hot Food Well
American Permanent Ware Company Dba Apw/wyott Foodservice Eqp Co
Cross-Reference Index
Part NumberManufacturer
55369 Northrop Grumman Systems Corporation Div Es Defensive Systems Division (USA)
55369 PRIMARY Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple (USA)
Related Parts
5330-00-641-2330INTERCHANGEABLE
SEAL,PLAIN ENCASED
7310-01-478-3538INTERCHANGEABLE
HOT FOOD WELL
SM-50-11DS/120V-500W

Frequently Asked Questions

What is NSN 5310-00-618-9529?

NSN 5310-00-618-9529 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 5310-00-618-9529?

NSN 5310-00-618-9529 has 2 cross-referenced part numbers: 55369 (Northrop Grumman Systems Corporation Div Es Defensive Systems Division), 55369 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple).

What NSN replaces 5310-00-618-9529?

There are 2 known substitutes for 5310-00-618-9529: 5330-00-641-2330, 7310-01-478-3538. Verify interchangeability with system specifications before substitution.

What are the specifications of 55369?

Key specifications for 55369: Material: STEEL OVERALL; Surface Finish: 63.0 MICROINCHES ALL SURFACES; Surface Treatment: CADMIUM OVERALL; Peripheral Shape Style: ROUND. 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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