The O-Ring, cataloged under National Stock Number 5331-01-580-6384, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Kato Engineering Inc.. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-580-6384 |
| Primary Part Number | 153-01901-08 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Kato Engineering 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 |
|---|---|
| 153-01901-08 PRIMARY | Kato Engineering Inc. (USA) |
| Reference | Meaning |
|---|---|
| 301-8328931A SHEET 12 ITEM J | 7/2 Vendor item drawing reference Naval Sea Systems Command |
| 8328931 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 5331-01-580-6384 is a O-Ring, manufactured by Kato Engineering Inc., classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-580-6384 has 1 manufacturer part number on file: 153-01901-08 (Kato Engineering Inc.).
1 possible match (shared part number, not a government interchangeability claim): 2040-01-596-8076. Verify interchangeability with system specifications before substitution.
Key specifications for 153-01901-08: Special Features: END ITEM:AIR FLOW SYSTEM ON A GENERATOR-SET LSD-41/49, CLASS 1600 KW. 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.