The Slide,directional Control Linear, cataloged under National Stock Number 4820-01-494-9958, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-494-9958 |
| Primary Part Number | 551-7068554-5 |
| Item Name | Slide,directional Control Linear |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Outside Diameter | 4.2390 INCHES NOMINAL IN |
| Material Document and Classification | MIL-C-15726 ALY-C71500 MIL SPEC SINGLE MATERIAL RESPONSE |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| 551-7068554-5 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 7068554 | D/9 Drawing number reference only Naval Sea Systems Command |
| H845-1801-5 | 5/2 Secondary reference U.S. Government activity |
| H845-1801 | D/9 Drawing number reference only U.S. Government activity |
NSN 4820-01-494-9958 is a Slide,directional Control Linear, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-494-9958 has 1 manufacturer part number on file: 551-7068554-5 (Naval Sea Systems Command).
3 possible matches (shared part number, not a government interchangeability claim): 3040-01-495-0021, 4820-01-495-0028, 3120-01-495-5781. Verify interchangeability with system specifications before substitution.
Key specifications for 551-7068554-5: Outside Diameter: 4.2390 INCHES NOMINAL IN; Material Document and Classification: MIL-C-15726 ALY-C71500 MIL SPEC SINGLE MATERIAL RESPONSE; Overall Length: 2.4700 INCHES NOMINAL IN; Part Name Assigned by Controlling Agency: SPOOL, MANIFOLD ASSEMBLY. 3 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.