The O-Ring, cataloged under National Stock Number 5331-01-422-1409, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Oerlikon Metco Us Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-422-1409 |
| Primary Part Number | 4MP902 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Oerlikon Metco Us Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 4MP902 PRIMARY | Oerlikon Metco Us Inc (USA) |
| Reference | Meaning |
|---|---|
| 4MP902 | 5/9 Secondary reference Metco Inc Sub of the Perkin-Elmer Corp |
NSN 5331-01-422-1409 is a O-Ring, manufactured by Oerlikon Metco Us Inc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-422-1409 has 1 manufacturer part number on file: 4MP902 (Oerlikon Metco Us Inc).
Key specifications for 4MP902: End Item Identification: 4 AMP 205 HOPPER ASSEMBLY. 0 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
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.