PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

81441O-Ring

Thor Power Tool Co Sub of Stewart-Warner Co · NSN 5331-01-039-9508 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-039-9508 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-039-9508. Primary manufacturer part number: 81441.
Features
  • O-Ring — FSC 5331
  • Center Hole Diameter: 0.106 INCHES MINIMUM AND 0.109 INCHES MAXIMUM IN
  • Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
  • Cross-Sectional Height: 0.669 INCHES MINIMUM AND 0.679 INCHES MAXIMUM IN
  • 1 verified cross-reference
  • Primary manufacturer: Thor Power Tool Co Sub of Stewart-Warner Co
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber Butadiene-Acrylonitrile Class Nbr construction
General Description

The O-Ring, cataloged under National Stock Number 5331-01-039-9508, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Thor Power Tool Co Sub of Stewart-Warner Co. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-039-9508
Primary Part Number81441
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerThor Power Tool Co Sub of Stewart-Warner Co
StatusACTIVE
Center Hole Diameter0.106 INCHES MINIMUM AND 0.109 INCHES MAXIMUM IN
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR
Cross-Sectional Height0.669 INCHES MINIMUM AND 0.679 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
4720-00-605-485181441 INTERCHANGEABLE
Hose,preformed
Dayco Products Inc
4810-01-398-844981758 INTERCHANGEABLE
Cap,valve
Eaton Aerospace Llc Dba Sterer Engineering Div Valve & Actuator
5306-01-553-596181441 INTERCHANGEABLE
Bolt,hook
Lawson Products, Inc.
Cross-Reference Index
Part NumberManufacturer
81441 Thor Power Tool Co Sub of Stewart-Warner Co (USA)
Related Parts
4720-00-605-4851INTERCHANGEABLE
HOSE,PREFORMED
81441
4810-01-398-8449INTERCHANGEABLE
CAP,VALVE
81758
5306-01-553-5961INTERCHANGEABLE
BOLT,HOOK
81441

Frequently Asked Questions

What is NSN 5331-01-039-9508?

NSN 5331-01-039-9508 is a O-Ring, manufactured by Thor Power Tool Co Sub of Stewart-Warner Co, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-039-9508?

NSN 5331-01-039-9508 has 1 cross-referenced part number: 81441 (Thor Power Tool Co Sub of Stewart-Warner Co).

What NSN replaces 5331-01-039-9508?

There are 3 known substitutes for 5331-01-039-9508: 4720-00-605-4851, 4810-01-398-8449, 5306-01-553-5961. Verify interchangeability with system specifications before substitution.

What are the specifications of 81441?

Key specifications for 81441: Center Hole Diameter: 0.106 INCHES MINIMUM AND 0.109 INCHES MAXIMUM IN; Material: RUBBER BUTADIENE-ACRYLONITRILE CLASS NBR; Cross-Sectional Height: 0.669 INCHES MINIMUM AND 0.679 INCHES MAXIMUM IN. 3 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