The O-Ring, cataloged under National Stock Number 5331-01-421-8880, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Nakakita Seisakusho Co. Ltd. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | O-Ring |
| FSC / FSG | 5331 — O-ring (FSG 53) |
| Manufacturers | Nakakita Seisakusho Co. Ltd (CAGE J3237) |
| Parameter | Value |
|---|---|
| NSN | 5331-01-421-8880 |
| Primary Part Number | KC004553 PIECE 13 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Nakakita Seisakusho Co. Ltd |
| 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 |
|---|---|
| KC004553 PIECE 13 PRIMARY | Nakakita Seisakusho Co. Ltd (JPN) |
| NS 770 C NO.13 | Nakakita Seisakusho Co. Ltd (JPN) |
| KC004553 NO.13 PRIMARY | Nakakita Seisakusho Co. Ltd (JPN) |
| Reference | Meaning |
|---|---|
| NS 770 C NO.13 | 5/9 Secondary reference Nakakita Seisakusho Co. Ltd |
| KC004553 NO.13 | 5/9 Secondary reference Nakakita Seisakusho Co. Ltd |
| KC004553 PIECE 13 | 3/9 Design control — primary reference Nakakita Seisakusho Co. Ltd |
NSN 5331-01-421-8880 is a O-Ring, manufactured by Nakakita Seisakusho Co. Ltd, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-421-8880 has 3 manufacturer part numbers on file: KC004553 PIECE 13 (Nakakita Seisakusho Co. Ltd), NS 770 C NO.13 (Nakakita Seisakusho Co. Ltd), KC004553 NO.13 (Nakakita Seisakusho Co. Ltd).
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.