NSN 5331-01-725-3503 — this item is cataloged by the U.S. Government under National Stock Number 5331-01-725-3503. Manufacturer of record part number: M201399U.
The O-Ring, cataloged under National Stock Number 5331-01-725-3503, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
Societe Industrielle Pour Le Developpement De La Securite (FRA)
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 5331-01-725-3503?
NSN 5331-01-725-3503 is a O-Ring, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 5331, O-ring. Status: active.
What part numbers are listed for NSN 5331-01-725-3503?
NSN 5331-01-725-3503 has 2 manufacturer part numbers on file: M201399U (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), 876843 (Societe Industrielle Pour Le Developpement De La Securite).
What are the specifications of M201399U?
Key specifications for M201399U: Part Name Assigned by Controlling Agency: O-RING. 0 specifications are documented in the U.S. Government catalog.
Is NSN 5331-01-725-3503 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.