The Seat,valve, cataloged under National Stock Number 4820-00-321-9541, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.
| Parameter | Value |
|---|---|
| NSN | 4820-00-321-9541 |
| Primary Part Number | 9F9162 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Body Outside Diameter | 2.125 INCHES NOMINAL IN |
| Taper Minor Diameter | 1.682 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Taper Major Diameter | 1.725 INCHES NOMINAL IN |
| Body Inside Diameter | 1.682 INCHES NOMINAL IN |
| Taper Length | 0.025 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Seat Angle in Deg | 30.000 NOMINAL |
| Seating Surface Shape | ANGULAR |
| 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 |
|---|---|
| 9F9162 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
| Reference | Meaning |
|---|---|
| IPD9F9162 | 5/9 Secondary reference Industrial Parts Depot, Llc Dba Ipd |
NSN 4820-00-321-9541 is a Seat,valve, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-321-9541 has 1 manufacturer part number on file: 9F9162 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 9F9162: Overall Height: 0.441 INCHES NOMINAL IN; Body Outside Diameter: 2.125 INCHES NOMINAL IN; Taper Minor Diameter: 1.682 INCHES NOMINAL IN; Style Designator: PLAIN. 9 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.