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NSN 5331-01-311-5971Government record, cited
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O-Ring5331-01-311-5971

NSN 5331-01-311-5971 · NIIN 013115971 · Part number 78172-135
Triumph Engine Control Systems Llc · FSC 5331 — O-ring · FSG 53 — Hardware and Abrasives · CAGE 11599
Government record, cited
NSN 5331-01-311-5971 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-311-5971. Manufacturer of record part number: 78172-135.
Also searched as  5331-01-311-5971 · 5331013115971 · NIIN 013115971 · 01-311-5971 · FSC 5331 O-ring · CAGE 11599 · 78172-135
Nearby stock numbers  ·
SECTION O-RING CROSS SECTION
5331-01-311-5971 — O-ring
Features
  • O-Ring — FSC 5331
  • 1 manufacturer part number on file
  • Manufacturer of record: Triumph Engine Control Systems Llc
Identification
  • NSN: 5331-01-311-5971
  • NIIN: 013115971
  • FSC: 5331 — O-ring
  • FSG: 53 — Hardware and Abrasives
  • Primary part number: 78172-135
  • Manufacturer: Triumph Engine Control Systems Llc
General Description

The O-Ring, cataloged under National Stock Number 5331-01-311-5971, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Triumph Engine Control Systems Llc. The record lists 1 manufacturer part number 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)
ManufacturersTriumph Engine Control Systems Llc (CAGE 11599)
Technical Specifications
ParameterValue
NSN5331-01-311-5971
Primary Part Number78172-135
Item NameO-Ring
FSC / FSG5331 / 53 — O-ring
ManufacturerTriumph Engine Control Systems Llc
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
78172-135 PRIMARY Triumph Engine Control Systems Llc (USA)
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 5331-01-311-5971?

NSN 5331-01-311-5971 is a O-Ring, manufactured by Triumph Engine Control Systems Llc, classified under FSC 5331, O-ring. Status: active.

What part numbers are listed for NSN 5331-01-311-5971?

NSN 5331-01-311-5971 has 1 manufacturer part number on file: 78172-135 (Triumph Engine Control Systems Llc).

Is NSN 5331-01-311-5971 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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