PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

51126O-Ring

American Apex Corporation · NSN 5331-01-471-6908 · FSC 5331 · O-Ring
Verified by PartsTable
NSN 5331-01-471-6908 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-471-6908. Primary manufacturer part number: 51126.
Features
  • O-Ring — FSC 5331
  • 2 verified cross-references
  • Primary manufacturer: American Apex Corporation
Applications
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
  • Environmental sealing
General Description

The O-Ring, cataloged under National Stock Number 5331-01-471-6908, is classified within Federal Supply Class 5331 (O-Ring) of the Hardware and Abrasives group. The primary manufacturer of record is American Apex Corporation. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5331-01-471-6908
Primary Part Number51126
Item NameO-Ring
FSC / FSG5331 / 53 — O-Ring
ManufacturerAmerican Apex Corporation
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
4810-01-084-59812820124-102 INTERCHANGEABLE
Valve,fuel Shut-Off
Federal Industries, Inc. Dba United Valve Company
3110-01-158-209051126 INTERCHANGEABLE
Bearing,ball,thrust
Skf Usa Inc.
3030-01-263-090617550-2 INTERCHANGEABLE
Belts,v,matched Set
Carlisle Power Transmission Products Inc
4720-01-339-0353FA6979JJJ0374 INTERCHANGEABLE
Hose Assembly,nonmetallic
Danfoss Power Solutions II, Llc
4720-01-434-48021408411 INTERCHANGEABLE
Hose Assembly,nonmetallic
Landoll Company, Llc
4720-01-439-5072 INTERCHANGEABLE
Hose Assembly,nonmetallic
Cross-Reference Index
Part NumberManufacturer
51126 PRIMARY American Apex Corporation (USA)
10201773 Nimikkeistokeskus Ncb Finland (FIN)
Related Parts
4810-01-084-5981INTERCHANGEABLE
VALVE,FUEL SHUT-OFF
2820124-102
3110-01-158-2090INTERCHANGEABLE
BEARING,BALL,THRUST
51126
3030-01-263-0906INTERCHANGEABLE
BELTS,V,MATCHED SET
17550-2
4720-01-339-0353INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
FA6979JJJ0374
4720-01-434-4802INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
1408411
4720-01-439-5072INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC

Frequently Asked Questions

What is NSN 5331-01-471-6908?

NSN 5331-01-471-6908 is a O-Ring, manufactured by American Apex Corporation, classified under FSC 5331 (O-Ring). Status: active.

What are the part numbers for NSN 5331-01-471-6908?

NSN 5331-01-471-6908 has 2 cross-referenced part numbers: 51126 (American Apex Corporation), 10201773 (Nimikkeistokeskus Ncb Finland).

What NSN replaces 5331-01-471-6908?

There are 6 known substitutes for 5331-01-471-6908: 4810-01-084-5981, 3110-01-158-2090, 3030-01-263-0906 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 51126?

Key specifications for 51126: Special Features: FOR 120 MM, AIMTEST BARREL ASSEMBLY (P/N 50185) MM; End Item Identification: 1005-01-464-2468; Part Name Assigned by Controlling Agency: O-RING, 120 MM MM. 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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