The O-Ring, cataloged under National Stock Number 5331-01-278-9490, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is W.w. Grainger, Inc. Div Government Sales Division. 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.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | W.w. Grainger, Inc. Div Government Sales Division (CAGE 25795) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-278-9490 |
| Primary Part Number | 30129 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | W.w. Grainger, Inc. Div Government Sales Division |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Part Number | Manufacturer |
|---|---|
| 30129 PRIMARY | W.w. Grainger, Inc. Div Government Sales Division (USA) |
NSN 5331-01-278-9490 is a O-Ring, manufactured by W.w. Grainger, Inc. Div Government Sales Division, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-278-9490 has 1 manufacturer part number on file: 30129 (W.w. Grainger, Inc. Div Government Sales Division).
3 possible matches (shared part number, not a government interchangeability claim): 5985-01-328-2361, 5345-01-618-1762, 5905-01-701-8488. Verify interchangeability with system specifications before substitution.
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.