PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

109609O-Ring

Hamilton Jet, Inc. · NSN 5331-01-681-3541 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-681-3541 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-681-3541. Primary manufacturer part number: 109609.
Features
  • O-Ring — FSC 5331
  • Center Hole Diameter: 243.0 MILLIMETERS NOMINAL MM
  • Cross-Sectional Height: 3.53 MILLIMETERS NOMINAL MM
  • 1 verified cross-reference
  • Primary manufacturer: Hamilton Jet, Inc.
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-681-3541, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Hamilton Jet, Inc.. Government technical data includes 2 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-681-3541
Primary Part Number109609
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerHamilton Jet, Inc.
StatusACTIVE
Center Hole Diameter243.0 MILLIMETERS NOMINAL MM
Cross-Sectional Height3.53 MILLIMETERS NOMINAL MM
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5310-00-489-8860109609 INTERCHANGEABLE
Nut,plain,wing
Eaton Aerospace, Llc Dba Jackson South
5995-01-378-7671MEC50-13-818 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Min-E-Con Llc
Cross-Reference Index
Part NumberManufacturer
109609 PRIMARY Hamilton Jet, Inc. (USA)
Related Parts
5310-00-489-8860INTERCHANGEABLE
NUT,PLAIN,WING
109609
5995-01-378-7671INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
MEC50-13-818

Frequently Asked Questions

What is NSN 5331-01-681-3541?

NSN 5331-01-681-3541 is a O-Ring, manufactured by Hamilton Jet, Inc., classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-681-3541?

NSN 5331-01-681-3541 has 1 cross-referenced part number: 109609 (Hamilton Jet, Inc.).

What NSN replaces 5331-01-681-3541?

There are 2 known substitutes for 5331-01-681-3541: 5310-00-489-8860, 5995-01-378-7671. Verify interchangeability with system specifications before substitution.

What are the specifications of 109609?

Key specifications for 109609: Center Hole Diameter: 243.0 MILLIMETERS NOMINAL MM; Cross-Sectional Height: 3.53 MILLIMETERS NOMINAL MM; Part Name Assigned by Controlling Agency: O-RING 243X3.53 N70 CUT 774; End Item Identification: WATERJET, MAR. 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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