PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51856O-Ring

Thomas C. Wilson, Inc. Dba Thomas C Wilson · NSN 5331-01-574-6411 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-574-6411 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-574-6411. Primary manufacturer part number: 51856.
Features
  • O-Ring — FSC 5331
  • 2 verified cross-references
  • Primary manufacturer: Thomas C. Wilson, Inc. Dba Thomas C Wilson
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-574-6411, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Thomas C. Wilson, Inc. Dba Thomas C Wilson. This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-574-6411
Primary Part Number51856
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerThomas C. Wilson, Inc. Dba Thomas C Wilson
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
6230-00-441-9503 INTERCHANGEABLE
Light,desk
4440-00-925-391351856 INTERCHANGEABLE
Drier,high Capac2ty
Tenney Engineering Inc Hq
5950-01-028-6693SM-B-542572 INTERCHANGEABLE
Transformer,audio Frequency
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5945-01-099-046313007097 INTERCHANGEABLE
Solenoid,electrical
Us Army Aviation and Missile Command
2940-01-312-926551856 INTERCHANGEABLE
Filter Element,fluid
Wix Corp
2510-01-621-492851856 INTERCHANGEABLE
Kit,window,adhesive
Tld Wollard Llc
7010-01-699-9678FORTIGATE 101F INTERCHANGEABLE
Security Data System
Fortinet, Inc
Cross-Reference Index
Part NumberManufacturer
51856 Thomas C. Wilson, Inc. Dba Thomas C Wilson (USA)
518560000 Thomas C. Wilson, Inc. Dba Thomas C Wilson (USA)
Related Parts
6230-00-441-9503INTERCHANGEABLE
LIGHT,DESK
4440-00-925-3913INTERCHANGEABLE
DRIER,HIGH CAPAC2TY
51856
5950-01-028-6693INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
SM-B-542572
5945-01-099-0463INTERCHANGEABLE
SOLENOID,ELECTRICAL
13007097
2940-01-312-9265INTERCHANGEABLE
FILTER ELEMENT,FLUID
51856
2510-01-621-4928INTERCHANGEABLE
KIT,WINDOW,ADHESIVE
51856
7010-01-699-9678INTERCHANGEABLE
SECURITY DATA SYSTEM
FORTIGATE 101F

Frequently Asked Questions

What is NSN 5331-01-574-6411?

NSN 5331-01-574-6411 is a O-Ring, manufactured by Thomas C. Wilson, Inc. Dba Thomas C Wilson, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-574-6411?

NSN 5331-01-574-6411 has 2 cross-referenced part numbers: 51856 (Thomas C. Wilson, Inc. Dba Thomas C Wilson), 518560000 (Thomas C. Wilson, Inc. Dba Thomas C Wilson).

What NSN replaces 5331-01-574-6411?

There are 7 known substitutes for 5331-01-574-6411: 6230-00-441-9503, 4440-00-925-3913, 5950-01-028-6693 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 51856?

Key specifications for 51856: Special Features: END ITEM:LEAK DETECTOR ASSEMBLY. 1 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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