The Seat,valve, cataloged under National Stock Number 4810-01-143-9966, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Triumph Actuation Systems - Connecticut, Llc. Government technical data includes 12 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4810-01-143-9966 |
| Primary Part Number | 4202053-1 |
| Item Name | Seat,valve |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Triumph Actuation Systems - Connecticut, Llc |
| Status | ACTIVE |
| Flange Seat to Disk End Height | 0.020 INCHES NOMINAL IN |
| Flange Diameter | 0.374 INCHES NOMINAL IN |
| FSC Application Data | POWER UNIT,STEERING |
| Body Outside Diameter | 0.313 INCHES NOMINAL IN |
| Hardness Rating | 50.0 ROCKWELL C MINIMUM AND 54.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | PLAIN FLANGED |
| Material Document and Classification | QQ-S-763,CL 10,TY A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 0.109 INCHES NOMINAL IN |
| Under Flange Height | 0.210 INCHES NOMINAL IN |
| Material | STEEL COMP 440C 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 |
|---|---|
| 4202053-1 PRIMARY | Triumph Actuation Systems - Connecticut, Llc (USA) |
| Reference | Meaning |
|---|---|
| 10109184 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 4810-01-143-9966 is a Seat,valve, manufactured by Triumph Actuation Systems - Connecticut, Llc, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-01-143-9966 has 1 manufacturer part number on file: 4202053-1 (Triumph Actuation Systems - Connecticut, Llc).
Key specifications for 4202053-1: Flange Seat to Disk End Height: 0.020 INCHES NOMINAL IN; Flange Diameter: 0.374 INCHES NOMINAL IN; FSC Application Data: POWER UNIT,STEERING; Body Outside Diameter: 0.313 INCHES NOMINAL IN. 12 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.