The Valve,flow Control, cataloged under National Stock Number 4820-01-458-7153, 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 7 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 4820-01-458-7153 |
| Primary Part Number | 6983521 |
| Item Name | Valve,flow Control |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Flow Control Device | O-RING, DILATING |
| Connection Type | THREADED EXTERNAL PIPE |
| End Connection Quantity | 1 |
| Valve Size | 0.125 INCHES IN |
| Nominal Thread Size | 0.125 INCHES IN |
| Thread Class | 3A A |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| 6983521 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| HV08-6 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-458-7153 is a Valve,flow Control, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-458-7153 has 1 manufacturer part number on file: 6983521 (Naval Sea Systems Command).
Key specifications for 6983521: Flow Control Device: O-RING, DILATING; Connection Type: THREADED EXTERNAL PIPE; End Connection Quantity: 1; Valve Size: 0.125 INCHES IN. 7 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.