NSN 5331-01-045-4146 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-045-4146. Manufacturer of record part number: 125-025.
Also searched as5331-01-045-4146 ·
5331010454146 ·
NIIN 010454146 ·
01-045-4146 ·
FSC 5331 O-ring · CAGE 34087 · 125-025
The O-Ring, cataloged under National Stock Number 5331-01-045-4146, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Kitco Llc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Catalog Facts
Item Name
O-Ring
FSC / FSG
5331 — O-ring (FSG 53)
Manufacturers
Kitco Llc (CAGE 34087)
Technical Specifications
Parameter
Value
NSN
5331-01-045-4146
Primary Part Number
125-025
Item Name
O-Ring
FSC / FSG
5331 / 53 — O-ring
Manufacturer
Kitco Llc
Status
ACTIVE
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
⇄Related Items3
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
NSN 5331-01-045-4146 is a O-Ring, manufactured by Kitco Llc, classified under FSC 5331, O-ring. Status: active.
What part numbers are listed for NSN 5331-01-045-4146?
NSN 5331-01-045-4146 has 1 manufacturer part number on file: 125-025 (Kitco Llc).
What NSN replaces 5331-01-045-4146?
3 possible matches (shared part number, not a government interchangeability claim): 6350-01-449-6522, 4730-01-482-0118, 6515-01-601-6398. Verify interchangeability with system specifications before substitution.
Is NSN 5331-01-045-4146 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.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.