The Kit,seat, cataloged under National Stock Number 4810-01-286-3699, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Thermofrost Cryo Plc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 4810-01-286-3699 |
| Primary Part Number | 200859 |
| Item Name | Kit,seat |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Thermofrost Cryo Plc |
| Status | ACTIVE |
| Storage Temp Range | -45.0 TO 93.0 CELSIUS DEGC |
| 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 |
|---|---|
| 200859 | Thermofrost Cryo Plc (GBR) |
| Reference | Meaning |
|---|---|
| 200859 | 5/2 Secondary reference U.S. Government activity |
| 200859 | 3/9 Design control — primary reference Waltham Clock Co Inc |
NSN 4810-01-286-3699 is a Kit,seat, manufactured by Thermofrost Cryo Plc, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-01-286-3699 has 1 manufacturer part number on file: 200859 (Thermofrost Cryo Plc).
1 possible match (shared part number, not a government interchangeability claim): 3030-01-291-8540. Verify interchangeability with system specifications before substitution.
Key specifications for 200859: Storage Temp Range: -45.0 TO 93.0 CELSIUS DEGC; Special Features: SEAT ASSY, 0-RING (.375 X .500 X .062), DIAPHRAMS, GASKET, 0-RING (1.875 X 2.000 X .062), COMPRESSION SPRING; Part Name Assigned by Controlling Agency: SEAT KIT. 1 specification is 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.