PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20440O-Ring

Cooper Surgical · NSN 5331-01-439-3471 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-439-3471 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-439-3471. Primary manufacturer part number: 20440.
Features
  • O-Ring — FSC 5331
  • 1 verified cross-reference
  • Primary manufacturer: Cooper Surgical
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-439-3471, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Cooper Surgical. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-439-3471
Primary Part Number20440
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerCooper Surgical
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5945-00-247-8320359B126 INTERCHANGEABLE
Relay,electromagnetic
General Dynamics Mission Systems, Inc. Dba Gdms
6685-00-434-4231 INTERCHANGEABLE
Cover
5325-00-480-2297582R423H14 INTERCHANGEABLE
Stud,turnlock Fastener
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5306-00-828-7165 INTERCHANGEABLE
Bolt,ribbed Shoulder
5950-01-016-0231989108-64B INTERCHANGEABLE
Coil,radio Frequency
Raytheon Company Dba Raytheon
5985-01-112-8661654VE4863-1 INTERCHANGEABLE
Adapter,waveguide
Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company
3020-01-210-024320440 INTERCHANGEABLE
Gear,spur
Twg Canada Consolidated Inc
5980-01-232-2980 INTERCHANGEABLE
Coupler,optoelectronic
6515-01-238-8095204.040 INTERCHANGEABLE
Screw,bone
Depuy Synthes Sales Inc Dba Depuy Synthes Trauma Div Depuy Synthes Sales, Inc., D/b/a Depuy Synthes Trauma
5975-01-298-3731204-40 INTERCHANGEABLE
Conduit Assembly,flexible
Dcx-Chol Enterprises, Inc.
Cross-Reference Index
Part NumberManufacturer
20440 PRIMARY Cooper Surgical (USA)
Related Parts
5945-00-247-8320INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
359B126
6685-00-434-4231INTERCHANGEABLE
COVER
5325-00-480-2297INTERCHANGEABLE
STUD,TURNLOCK FASTENER
582R423H14
5306-00-828-7165INTERCHANGEABLE
BOLT,RIBBED SHOULDER
5950-01-016-0231INTERCHANGEABLE
COIL,RADIO FREQUENCY
989108-64B
5985-01-112-8661INTERCHANGEABLE
ADAPTER,WAVEGUIDE
654VE4863-1
3020-01-210-0243INTERCHANGEABLE
GEAR,SPUR
20440
5980-01-232-2980INTERCHANGEABLE
COUPLER,OPTOELECTRONIC
6515-01-238-8095INTERCHANGEABLE
SCREW,BONE
204.040
5975-01-298-3731INTERCHANGEABLE
CONDUIT ASSEMBLY,FLEXIBLE
204-40
2530-01-412-7833INTERCHANGEABLE
DRAIN VALVE,RESERVOIR
20440

Frequently Asked Questions

What is NSN 5331-01-439-3471?

NSN 5331-01-439-3471 is a O-Ring, manufactured by Cooper Surgical, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-439-3471?

NSN 5331-01-439-3471 has 1 cross-referenced part number: 20440 (Cooper Surgical).

What NSN replaces 5331-01-439-3471?

There are 11 known substitutes for 5331-01-439-3471: 5945-00-247-8320, 6685-00-434-4231, 5325-00-480-2297 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20440?

Key specifications for 20440: Special Features: END ITEM APPLICATION 6515-01-414-3607; CRYOSURGICAL SYSTEM; MODEL GE-2000. 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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