The Sleeve and Slide,directional Con, cataloged under National Stock Number 4820-00-305-4393, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-305-4393 |
| Primary Part Number | 177643-2 |
| Item Name | Sleeve and Slide,directional Con |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport |
| Status | ACTIVE |
| Valve Design Control Activity | 26512 |
| 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 |
|---|---|
| 177643-2 | Northrop Grumman Systems Corporation (USA) |
| 177643-2 PRIMARY | Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport (USA) |
| Reference | Meaning |
|---|---|
| 177643 | D/9 Drawing number reference only Northrop Grumman Systems Corporation |
| 177643-2 | 5/9 Secondary reference Tek Precision Co Limited |
NSN 4820-00-305-4393 is a Sleeve and Slide,directional Con, manufactured by Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-305-4393 has 2 manufacturer part numbers on file: 177643-2 (Northrop Grumman Systems Corporation), 177643-2 (Triumph Actuation Systems, Llc Div Triumph Actuation Systems - Freeport).
Key specifications for 177643-2: Valve Design Control Activity: 26512; End Item Identification: GRUMMAN AEROSPACE CORP MODELS 89H1062 AND 177590 HYDRAULIC SERVOVALVES. 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.