The Instrument Valve, cataloged under National Stock Number 4820-01-718-3732, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Naval Sea Systems Command. The record lists 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-718-3732 |
| Primary Part Number | 8600457 FN109 |
| Item Name | Instrument Valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | S |
| Part Number | Manufacturer |
|---|---|
| 8600457 FN109D6 | Naval Inventory Control Point Mechanicsburg (USA) |
| 8600457 FN109 PRIMARY | Naval Sea Systems Command (USA) |
| 8864640-001 PRIMARY | Naval Sea Systems Command (USA) |
| 8864640-001D6 | Naval Inventory Control Point Mechanicsburg (USA) |
| Reference | Meaning |
|---|---|
| 8600457 FN109 SHEET 3 | D/9 Drawing number reference only Naval Sea Systems Command |
| 8864640-001 SHEET 1 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 4820-01-718-3732 is a Instrument Valve, manufactured by Naval Sea Systems Command, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-718-3732 has 4 manufacturer part numbers on file: 8600457 FN109D6 (Naval Inventory Control Point Mechanicsburg), 8600457 FN109 (Naval Sea Systems Command), 8864640-001 (Naval Sea Systems Command), 8864640-001D6 (Naval Inventory Control Point Mechanicsburg).
Key specifications for 8600457 FN109: Part Name Assigned by Controlling Agency: INSTRUMENT VALVE. 0 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.