PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

5-256O-Ring

Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division · NSN 5331-01-592-6422 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-592-6422 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-592-6422. Primary manufacturer part number: 5-256.
Features
  • O-Ring — FSC 5331
  • Color: BLACK
  • 2 verified cross-references
  • Primary manufacturer: Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-592-6422, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-592-6422
Primary Part Number5-256
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerParker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division
StatusACTIVE
ColorBLACK
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5915-00-043-2580241-0302-000 INTERCHANGEABLE
Filter,low Pass
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
5975-00-056-35763426 INTERCHANGEABLE
Box Connector,electrical
Raco, a Division of Hubbell Incorporated(delaware)
4820-00-142-1992131-50775 INTERCHANGEABLE
Cock,shutoff,screw Stem
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
5935-00-660-70085256 INTERCHANGEABLE
Connector,receptacle,electrical
Hubbell Incorporated (delaware) Dba Wiring Device-Kellems Division
6105-00-798-26665256 INTERCHANGEABLE
Parts Kit,electric Motor
Hydro-Aire Aerospace Corp
1730-00-967-7970 INTERCHANGEABLE
Pump,hydraulic,hand
5950-01-080-8148 INTERCHANGEABLE
Reactor
4130-01-099-17711620-6-5/32-1 1/2 INTERCHANGEABLE
Distributor,refrigerant
Parker-Hannifin Corp Div Sporlan Division
5950-01-298-78445256 INTERCHANGEABLE
Coil,radio Frequency
U S Dept of Transportation Federal Aviation Administration
4940-01-356-8235 INTERCHANGEABLE
Tube,testing Kit
Cross-Reference Index
Part NumberManufacturer
5-256 N0552 Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division (USA)
5-256 PRIMARY Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division (USA)
Related Parts
5915-00-043-2580INTERCHANGEABLE
FILTER,LOW PASS
241-0302-000
5975-00-056-3576INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
3426
4820-00-142-1992INTERCHANGEABLE
COCK,SHUTOFF,SCREW STEM
131-50775
5935-00-660-7008INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5256
6105-00-798-2666INTERCHANGEABLE
PARTS KIT,ELECTRIC MOTOR
5256
1730-00-967-7970INTERCHANGEABLE
PUMP,HYDRAULIC,HAND
5950-01-080-8148INTERCHANGEABLE
REACTOR
4130-01-099-1771INTERCHANGEABLE
DISTRIBUTOR,REFRIGERANT
1620-6-5/32-1 1/2
5950-01-298-7844INTERCHANGEABLE
COIL,RADIO FREQUENCY
5256
4940-01-356-8235INTERCHANGEABLE
TUBE,TESTING KIT
5120-01-399-9533INTERCHANGEABLE
ADAPTER,SOCKET WRENCH
5256
5120-01-591-4568INTERCHANGEABLE
INSERTER,BEARING AND BUSHING
E5256

Frequently Asked Questions

What is NSN 5331-01-592-6422?

NSN 5331-01-592-6422 is a O-Ring, manufactured by Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-592-6422?

NSN 5331-01-592-6422 has 2 cross-referenced part numbers: 5-256 N0552 (Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division), 5-256 (Parker-Hannifin Corporation Dba Pneutronics Div Tube Fittings Division).

What NSN replaces 5331-01-592-6422?

There are 12 known substitutes for 5331-01-592-6422: 5915-00-043-2580, 5975-00-056-3576, 4820-00-142-1992 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 5-256?

Key specifications for 5-256: Part Name Assigned by Controlling Agency: BUNA RING; Special Features: POLYTETRAFLUOROETHYLENE COATED; Color: BLACK. 3 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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