The Gear Operator,valve, cataloged under National Stock Number 4820-01-474-2843, 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 2 specifications, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-474-2843 |
| Primary Part Number | 803-6397434-X4XXXX-050 |
| Item Name | Gear Operator,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Material Document and Classification | QQ-S-763 CL 304 AND CL 316L FED SPEC 1ST MATERIAL RESPONSE AND QQ-B-637, ALTERNATE IS ASTM 861 FED SPEC 2ND MATERIAL RESPONSE |
| Material | STEEL CORROSION RESISTING AND COPPER |
| 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 |
|---|---|
| 803-6397434-X4XXXX-050 PRIMARY | Naval Sea Systems Command (USA) |
| 803-6397434-X4XXXX ITEM 50 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 803-6397434-X3XXXX-050 | 5/9 Secondary reference Naval Sea Systems Command |
| 803-6397434-X3XXXX ITEM 50 | 5/9 Secondary reference Naval Sea Systems Command |
| 6397434 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4820-01-474-2843 is a Gear Operator,valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-474-2843 has 2 manufacturer part numbers on file: 803-6397434-X4XXXX-050 (Naval Sea Systems Command), 803-6397434-X4XXXX ITEM 50 (Naval Sea Systems Command).
Key specifications for 803-6397434-X4XXXX-050: Material Document and Classification: QQ-S-763 CL 304 AND CL 316L FED SPEC 1ST MATERIAL RESPONSE AND QQ-B-637, ALTERNATE IS ASTM 861 FED SPEC 2ND MATERIAL RESPONSE; Special Features: ITEM NAME ON DWG IS FLOW CONTROL DEVICE ASSEMBLY; ASSEMBLY CONSISTS OF: ITEM 51 CLEVIS 1; ITEM 52 LATCH 1; ITEM 53 DIAL 1; ITEM 54 SPRING, LATCH FLAT 1; ITEM 55 SCREW, SET, CUP POINT SLF LKG 2; ITEM 56 SCREW, MACH PAN HEAD SLOTTED, SLF LKG 1; AND ITEM 51 PIN, GROOVED 1; THIS ASSEMBLY GOES ON BOTH 0.750 INCH AND 1.000 INCH VALVES IN; Material: STEEL CORROSION RESISTING AND COPPER. 2 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.