The Sleeve and Slide,directional Con, cataloged under National Stock Number 4810-01-281-4901, is classified within Federal Supply Class 4810 (Valves, Powered) of the Valves group. The manufacturer of record is Thomas Instrument, Incorporated. Government technical data includes 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4810-01-281-4901 |
| Primary Part Number | 43898 |
| Item Name | Sleeve and Slide,directional Con |
| FSC / FSG | 4810 / 48 — Valves, Powered |
| Manufacturer | Thomas Instrument, Incorporated |
| Status | ACTIVE |
| Valve Model Number for Which Designed | 70357 |
| Criticality Code Justification | FEAT AND AGAV |
| Slide Material | STEEL CORROSION RESISTING |
| Sleeve Material | STEEL CORROSION RESISTING |
| Valve Design Control Activity | 99643 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Part Number | Manufacturer |
|---|---|
| 43898 | Thomas Instrument, Incorporated (USA) |
| Reference | Meaning |
|---|---|
| 43898 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4810-01-281-4901 is a Sleeve and Slide,directional Con, manufactured by Thomas Instrument, Incorporated, classified under FSC 4810, Valves, Powered. Status: active.
NSN 4810-01-281-4901 has 1 manufacturer part number on file: 43898 (Thomas Instrument, Incorporated).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-299-7476. Verify interchangeability with system specifications before substitution.
Key specifications for 43898: Valve Model Number for Which Designed: 70357; Criticality Code Justification: FEAT AND AGAV; Slide Material: STEEL CORROSION RESISTING; Special Features: MANUFACTURERS SUGGESTED NAME IS SPOOL, SLEEVE AND PISTON ASSEMBLY; MEDIA FOR WHICH DESIGNED IS MIL-H-5606 AND MIL-H-83282. 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.
NSN 4810-01-281-4901 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.