The Gear Operator,valve, cataloged under National Stock Number 4820-01-503-6399, 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 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-503-6399 |
| Primary Part Number | 7410373-A1 |
| Item Name | Gear Operator,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Features Provided | INDICATOR GAGE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 7410373-A1 PRIMARY | Naval Sea Systems Command (USA) |
| 564-7410373-A1 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| B525-3028-A1 | 5/2 Secondary reference U.S. Government activity |
| 7410373 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4820-01-503-6399 is a Gear Operator,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-503-6399 has 2 manufacturer part numbers on file: 7410373-A1 (Naval Sea Systems Command), 564-7410373-A1 (Naval Sea Systems Command).
Key specifications for 7410373-A1: Features Provided: INDICATOR GAGE; Special Features: HAS 90 DEG GEAR BOX, BF ELLIOTT P/N 26242 S26242M601A, AND CONTROLS CVD-1. SIMILAR TO 4820-01-503-4552 WHICH CONTROLS CVD-2; Part Name Assigned by Controlling Agency: MANUAL REMOTE OPERATOR ASSEMBLY FOR CVD-1; End Item Identification: SEAWOLF CLASS SUBMARINE SSN 23. 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.
NSN 4820-01-503-6399 has DEMIL Code B. 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.