The Manual Operator,valve, cataloged under National Stock Number 4820-01-044-3260, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 4820-01-044-3260 |
| Primary Part Number | 810-4385059PC 50 THRU PC 79 |
| Item Name | Manual Operator,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| General Characteristics Item Description | CONSISTS OF A COPPER-NICKEL-ALUMINUM DRIVE SHAFT W/MANGANESE BRONZE HOUSING W/APPROPRIATE GEAR AND BEARING,MANUALLY @OPERATED,18.000 IN. ALUMINUM ALLOY HANDWHEEL IN |
| 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 |
|---|---|
| 810-4385059PC 50 THRU PC 79 PRIMARY | Naval Sea Systems Command (USA) |
| 810-4385059 ASSEMBLY A | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 810-4385059 | D/9 Drawing number reference only Naval Sea Systems Command |
| 810-4385059ASSY | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 810-4385059PC 5 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 4820-01-044-3260 is a Manual Operator,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-044-3260 has 2 manufacturer part numbers on file: 810-4385059PC 50 THRU PC 79 (Naval Sea Systems Command), 810-4385059 ASSEMBLY A (Naval Sea Systems Command).
1 possible match (shared part number, not a government interchangeability claim): 4820-01-061-0421. Verify interchangeability with system specifications before substitution.
Key specifications for 810-4385059PC 50 THRU PC 79: General Characteristics Item Description: CONSISTS OF A COPPER-NICKEL-ALUMINUM DRIVE SHAFT W/MANGANESE BRONZE HOUSING W/APPROPRIATE GEAR AND BEARING,MANUALLY @OPERATED,18.000 IN. ALUMINUM ALLOY HANDWHEEL IN; End Item Identification: NAVAL SEA SYSTEMS COMMAND 8 IN. BALL SWING CHECK VALVE PER DWG 810-4385059 IN. 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.