The O-Ring, cataloged under National Stock Number 5331-01-438-7493, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Level 3 Communications, Llc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Level 3 Communications, Llc (CAGE 3A6U5) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-438-7493 |
| Primary Part Number | 1030163 ITEM 9 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Level 3 Communications, Llc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 1030163 ITEM 9 PRIMARY | Level 3 Communications, Llc (USA) |
| Reference | Meaning |
|---|---|
| AS568A-211 | 3/9 Design control — primary reference Mcmaster-Carr Supply Co |
NSN 5331-01-438-7493 is a O-Ring, manufactured by Level 3 Communications, Llc, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-438-7493 has 1 manufacturer part number on file: 1030163 ITEM 9 (Level 3 Communications, Llc).
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 5331-01-438-7493 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.