PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

81404O-Ring

Thales Defense & Security Inc Dba Thales Communications Inc · NSN 5331-01-571-3713 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-571-3713 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-571-3713. Primary manufacturer part number: 81404.
Features
  • O-Ring — FSC 5331
  • Material: RUBBER
  • Center Hole Diameter: 0.070 INCHES NOMINAL IN
  • Cross-Sectional Height: 0.070 INCHES NOMINAL IN
  • 1 verified cross-reference
  • Primary manufacturer: Thales Defense & Security Inc Dba Thales Communications Inc
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
  • Applications requiring Rubber construction
General Description

The O-Ring, cataloged under National Stock Number 5331-01-571-3713, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Thales Defense & Security Inc Dba Thales Communications Inc. 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
NSN5331-01-571-3713
Primary Part Number81404
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerThales Defense & Security Inc Dba Thales Communications Inc
StatusACTIVE
MaterialRUBBER
Center Hole Diameter0.070 INCHES NOMINAL IN
Cross-Sectional Height0.070 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
2530-00-422-7669201610 INTERCHANGEABLE
Housing,valve Spring
Bendix Commercial Vehicle Systems Llc Dba Bendix Commercial Vehicle Systems
4935-00-560-202781404 INTERCHANGEABLE
Screw
International Business Machines Corp Parts Order Center Dept E - 54
5120-01-663-157481404 INTERCHANGEABLE
Screwdriver,cross Tip
Pratt-Read Tools, Llc
Cross-Reference Index
Part NumberManufacturer
81404 PRIMARY Thales Defense & Security Inc Dba Thales Communications Inc (USA)
Related Parts
2530-00-422-7669INTERCHANGEABLE
HOUSING,VALVE SPRING
201610
4935-00-560-2027INTERCHANGEABLE
SCREW
81404
5120-01-663-1574INTERCHANGEABLE
SCREWDRIVER,CROSS TIP
81404

Frequently Asked Questions

What is NSN 5331-01-571-3713?

NSN 5331-01-571-3713 is a O-Ring, manufactured by Thales Defense & Security Inc Dba Thales Communications Inc, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-571-3713?

NSN 5331-01-571-3713 has 1 cross-referenced part number: 81404 (Thales Defense & Security Inc Dba Thales Communications Inc).

What NSN replaces 5331-01-571-3713?

There are 3 known substitutes for 5331-01-571-3713: 2530-00-422-7669, 4935-00-560-2027, 5120-01-663-1574. Verify interchangeability with system specifications before substitution.

What are the specifications of 81404?

Key specifications for 81404: Material: RUBBER; Center Hole Diameter: 0.070 INCHES NOMINAL IN; Cross-Sectional Height: 0.070 INCHES NOMINAL IN; End Item Identification: LAND SHARK PRESSURE TANK. 4 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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