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NSN 5331-01-652-3663Government record, cited
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O-Ring5331-01-652-3663

NSN 5331-01-652-3663 · NIIN 016523663 · Part number 239-1139
Caterpillar Inc Div Caterpillar Defense · FSC 5331 — O-ring · FSG 53 — Hardware and Abrasives · CAGE 11083
Government record, cited
NSN 5331-01-652-3663 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-652-3663. Manufacturer of record part number: 239-1139.
Also searched as  5331-01-652-3663 · 5331016523663 · NIIN 016523663 · 01-652-3663 · FSC 5331 O-ring · CAGE 11083 · 239-1139 · 2391139
Nearby stock numbers  ·
SECTION O-RING CROSS SECTION
5331-01-652-3663 — O-ring
Features
  • O-Ring — FSC 5331
  • 2 manufacturer part numbers on file
  • Manufacturer of record: Caterpillar Inc Div Caterpillar Defense
Identification
  • NSN: 5331-01-652-3663
  • NIIN: 016523663
  • FSC: 5331 — O-ring
  • FSG: 53 — Hardware and Abrasives
  • Primary part number: 239-1139
  • Manufacturer: Caterpillar Inc Div Caterpillar Defense
General Description

The O-Ring, cataloged under National Stock Number 5331-01-652-3663, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.

Catalog Facts
Item NameO-Ring
FSC / FSG5331 — O-ring (FSG 53)
ManufacturersCaterpillar Inc Div Caterpillar Defense (CAGE 11083); Royston Limited (CAGE KH573)
Technical Specifications
ParameterValue
NSN5331-01-652-3663
Primary Part Number239-1139
Item NameO-Ring
FSC / FSG5331 / 53 — O-ring
ManufacturerCaterpillar Inc Div Caterpillar Defense
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Cross-Reference Index
Part NumberManufacturer
239-1139 PRIMARY Caterpillar Inc Div Caterpillar Defense (USA)
2391139 Royston Limited (GBR)
No interchangeability data on file.
Other items in FSC 5331 — O-ring
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5331-00-001-1971
O-RING
5331-00-001-1979
O-RING
5331-00-001-3904
O-RING
5331-00-001-3905
O-RING
5331-00-001-3906
O-RING
5331-00-001-3908
O-RING
5331-00-001-3923
O-RING
5331-00-001-3924
O-RING

Frequently Asked Questions

What is NSN 5331-01-652-3663?

NSN 5331-01-652-3663 is a O-Ring, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5331, O-ring. Status: active.

What part numbers are listed for NSN 5331-01-652-3663?

NSN 5331-01-652-3663 has 2 manufacturer part numbers on file: 239-1139 (Caterpillar Inc Div Caterpillar Defense), 2391139 (Royston Limited).

Is NSN 5331-01-652-3663 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.

U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.

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✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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