The O-Ring, cataloged under National Stock Number 5331-01-485-8921, is classified within Federal Supply Class 5331 (O-ring) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5331-01-485-8921 |
| Primary Part Number | 237-7623 |
| Item Name | O-Ring |
| FSC / FSG | 5331 / 53 — O-ring |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Center Hole Diameter | 0.210 INCHES NOMINAL IN |
| 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 |
|---|---|
| 3P-0657 | Navantia - Propulsion Y Energia Motores - Cartagena (ESP) |
| 237-7623 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 10076355 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 3P0657 | 5/9 Secondary reference Caterpillar Inc Div Caterpillar Defense |
NSN 5331-01-485-8921 is a O-Ring, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5331, O-ring. Status: active.
NSN 5331-01-485-8921 has 2 manufacturer part numbers on file: 3P-0657 (Navantia - Propulsion Y Energia Motores - Cartagena), 237-7623 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 237-7623: Special Features: WEIGHS 0.020 POUNDS; OUTSIDE DIA. 2.475 IN. NOMINAL LBS; Center Hole Diameter: 0.210 INCHES NOMINAL IN. 1 specification is 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.