The O-Ring, cataloged under National Stock Number 5331-01-581-8890, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Msc Industrial Supply. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5331-01-581-8890 |
| Primary Part Number | 158 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Msc Industrial Supply |
| 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 |
|---|---|
| 158 PRIMARY | Msc Industrial Supply (USA) |
| Reference | Meaning |
|---|---|
| 10340173 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5331-01-581-8890 is a O-Ring, manufactured by Msc Industrial Supply, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-581-8890 has 1 manufacturer part number on file: 158 (Msc Industrial Supply).
Key specifications for 158: End Item Identification: 5855-01-573-2483; MEDIUM RANGE THERMAL BI-OCULAR (MRTB). 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.