The Valve,ball, cataloged under National Stock Number 4820-01-449-7915, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. The record lists 2 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Valve,ball |
| FSC / FSG | 4820 — Valves, Nonpowered (FSG 48) |
| Manufacturers | Caterpillar Inc Div Caterpillar Defense (CAGE 11083) |
| Parameter | Value |
|---|---|
| NSN | 4820-01-449-7915 |
| Primary Part Number | 121-0920 |
| Item Name | Valve,ball |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| 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 |
|---|---|
| 121-0920 | Caterpillar Inc Div Caterpillar Defense (USA) |
| 9Y6534 IT 39 | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| 3/4 466 YBSWO | 5/9 Secondary reference U.S. Government activity |
| 3/4 446666YBSWO | 3/9 Design control — primary reference U.S. Government activity |
| 9Y6534 | D/9 Drawing number reference only Caterpillar Inc Div Caterpillar Defense |
NSN 4820-01-449-7915 is a Valve,ball, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-449-7915 has 2 manufacturer part numbers on file: 121-0920 (Caterpillar Inc Div Caterpillar Defense), 9Y6534 IT 39 (Caterpillar Inc Div Caterpillar Defense).
1 possible match (shared part number, not a government interchangeability claim): 4710-01-464-4693. 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.