The O-Ring, cataloged under National Stock Number 5331-01-278-7635, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Komatsu America Corp.. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | Komatsu America Corp. (CAGE 0SAT8) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-278-7635 |
| Primary Part Number | 157255H1 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Komatsu America Corp. |
| 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 |
|---|---|
| 157255H1 | Komatsu America Corp. (USA) |
| Reference | Meaning |
|---|---|
| 157255H1 | 3/9 Design control — primary reference Komatsu American Intl Co |
NSN 5331-01-278-7635 is a O-Ring, manufactured by Komatsu America Corp., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-278-7635 has 1 manufacturer part number on file: 157255H1 (Komatsu America Corp.).
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.