PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

50066O-Ring

Hutchinson Industries, Inc Div Defense and Industry · NSN 5331-01-578-7383 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-578-7383 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-578-7383. Primary manufacturer part number: 50066.
Features
  • O-Ring — FSC 5331
  • 2 verified cross-references
  • Primary manufacturer: Hutchinson Industries, Inc Div Defense and Industry
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-578-7383, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Hutchinson Industries, Inc Div Defense and Industry. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-Ring (FSG 53)
ManufacturersHutchinson Industries, Inc Div Defense and Industry (CAGE 62161); Oshkosh Corp (CAGE 45152)
Technical Specifications
ParameterValue
NSN5331-01-578-7383
Primary Part Number50066
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerHutchinson Industries, Inc Div Defense and Industry
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5360-00-201-0518400797PC13 INTERCHANGEABLE
Spring,helical,compression
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5330-00-285-6389106275 INTERCHANGEABLE
Seal,plain Encased
Cummins Inc.
1650-00-442-807850066 INTERCHANGEABLE
Lock,sleeve,hydraul
Moog Military Aircraft Llc
5930-00-493-130150066 INTERCHANGEABLE
Switch,push-Pull
Cole Hersee Company
1650-00-569-834335-17547Z INTERCHANGEABLE
Pin,pivot
Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division
3120-00-662-888794861HAX INTERCHANGEABLE
Bearing,sleeve
Navistar Intl Corp Truck Br Ohio Plant
5360-01-378-5306 INTERCHANGEABLE
Spring,helical,compression
4730-01-442-611950066 INTERCHANGEABLE
Locknut,pipe
Tex-a-Draulics Inc
4820-01-576-961160263 INTERCHANGEABLE
Valve,regulating,system Pressure
Hutchinson Industries, Inc Div Defense and Industry
4820-01-578-697440134 INTERCHANGEABLE
Body,valve
Hutchinson Industries, Inc Div Defense and Industry
Cross-Reference Index
Part NumberManufacturer
50066 PRIMARY Hutchinson Industries, Inc Div Defense and Industry (USA)
3818436 Oshkosh Corp (USA)
Related Parts
5360-00-201-0518INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
400797PC13
5330-00-285-6389INTERCHANGEABLE
SEAL,PLAIN ENCASED
106275
1650-00-442-8078INTERCHANGEABLE
LOCK,SLEEVE,HYDRAUL
50066
5930-00-493-1301INTERCHANGEABLE
SWITCH,PUSH-PULL
50066
1650-00-569-8343INTERCHANGEABLE
PIN,PIVOT
35-17547Z
3120-00-662-8887INTERCHANGEABLE
BEARING,SLEEVE
94861HAX
5360-01-378-5306INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
4730-01-442-6119INTERCHANGEABLE
LOCKNUT,PIPE
50066
4820-01-576-9611INTERCHANGEABLE
VALVE,REGULATING,SYSTEM PRESSURE
60263
4820-01-578-6974INTERCHANGEABLE
BODY,VALVE
40134
5331-01-578-7394INTERCHANGEABLE
O-RING
50065

Frequently Asked Questions

What is NSN 5331-01-578-7383?

NSN 5331-01-578-7383 is a O-Ring, manufactured by Hutchinson Industries, Inc Div Defense and Industry, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-578-7383?

NSN 5331-01-578-7383 has 2 cross-referenced part numbers: 50066 (Hutchinson Industries, Inc Div Defense and Industry), 3818436 (Oshkosh Corp).

What NSN replaces 5331-01-578-7383?

There are 11 known substitutes for 5331-01-578-7383: 5360-00-201-0518, 5330-00-285-6389, 1650-00-442-8078 and 8 more. Verify interchangeability with system specifications before substitution.

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