The Guide,valve Stem, cataloged under National Stock Number 4820-01-358-7747, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-358-7747 |
| Primary Part Number | 211031639 |
| Item Name | Guide,valve Stem |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Material | NICKEL ALLOY |
| 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 |
|---|---|
| 6405340 FIND NO.4B | Naval Sea Systems Command (USA) |
| 211031639 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 211970980 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
| 6405340 | D/9 Drawing number reference only Naval Sea Systems Command |
| 211070980 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 4820-01-358-7747 is a Guide,valve Stem, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-358-7747 has 2 manufacturer part numbers on file: 6405340 FIND NO.4B (Naval Sea Systems Command), 211031639 (Naval Sea Systems Command).
Key specifications for 211031639: Special Features: 2.750 IN. BY 1.000 IN. IN; Material: NICKEL ALLOY. 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.