The Seat,valve, cataloged under National Stock Number 4810-00-998-7650, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Triumph Engine Control Systems Llc. Government technical data includes 8 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4810-00-998-7650 |
| Primary Part Number | 20A45407-3 |
| Item Name | Seat,valve |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Triumph Engine Control Systems Llc |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.065 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN |
| Flange Diameter | 0.300 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN |
| Body Outside Diameter | 0.227 INCHES MINIMUM AND 0.228 INCHES MAXIMUM IN |
| Material Document and Classification | AMS5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 0.122 INCHES MINIMUM AND 0.128 INCHES MAXIMUM IN |
| Under Flange Height | 0.230 INCHES MINIMUM AND 0.250 INCHES MAXIMUM 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 |
|---|---|
| 20A45407-3 PRIMARY | Triumph Engine Control Systems Llc (USA) |
NSN 4810-00-998-7650 is a Seat,valve, manufactured by Triumph Engine Control Systems Llc, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-00-998-7650 has 1 manufacturer part number on file: 20A45407-3 (Triumph Engine Control Systems Llc).
Key specifications for 20A45407-3: Flange Seat to Disk End Height: 0.065 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN; Flange Diameter: 0.300 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN; Body Outside Diameter: 0.227 INCHES MINIMUM AND 0.228 INCHES MAXIMUM IN; Material Document and Classification: AMS5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 8 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.