The Seat,valve, cataloged under National Stock Number 4820-00-090-9165, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Allison Transmission Inc Dba Allison Transmission, Inc. Government technical data includes 5 specifications, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-090-9165 |
| Primary Part Number | 7708981 |
| Item Name | Seat,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| Body Outside Diameter | 0.995 INCHES NOMINAL IN |
| Style Designator | PLAIN |
| Body Inside Diameter | 0.500 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Seating Surface Shape | FLAT |
| 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 |
|---|---|
| 7708981 PRIMARY | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| 7708981 | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 6767867 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
| 7708981 | 5/9 Secondary reference Rotary Products Inc |
| 8355748 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
| 6767867 | 5/9 Secondary reference General Motors Corp |
NSN 4820-00-090-9165 is a Seat,valve, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-090-9165 has 2 manufacturer part numbers on file: 7708981 (Allison Transmission Inc Dba Allison Transmission, Inc), 7708981 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 7708981: Overall Height: 0.312 INCHES NOMINAL IN; Body Outside Diameter: 0.995 INCHES NOMINAL IN; Style Designator: PLAIN; Body Inside Diameter: 0.500 INCHES NOMINAL IN. 5 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.