The Coil,osmosis Desalination Vessel, cataloged under National Stock Number 4620-01-411-1121, is classified within Federal Supply Class 4620 (Water Distillation Equipment, Marine and Industrial) of the Water Purification and Sewage Treatment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 3 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4620-01-411-1121 |
| Primary Part Number | 6777165 ASSY NO.99 |
| Item Name | Coil,osmosis Desalination Vessel |
| FSC / FSG | 4620 / 46 — Water Distillation Equipment, Marine and Industrial |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Overall Diameter | 13.000 INCHES NOMINAL IN |
| General Characteristics Item Description | PRESSURE REDUCING; FLANGED FITTINGS |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 6777165 ASSY NO.99 PRIMARY | Naval Sea Systems Command (USA) |
| 531-6777165 ASSY NO.99 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6777165 | D/9 Drawing number reference only Naval Sea Systems Command |
| 531-6777165-ASS | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 4620-01-411-1121 is a Coil,osmosis Desalination Vessel, manufactured by Naval Sea Systems Command, classified under FSC 4620, Water Distillation Equipment, Marine and Industrial. Status: active.
NSN 4620-01-411-1121 has 2 manufacturer part numbers on file: 6777165 ASSY NO.99 (Naval Sea Systems Command), 531-6777165 ASSY NO.99 (Naval Sea Systems Command).
Key specifications for 6777165 ASSY NO.99: Overall Height: 10.690 INCHES NOMINAL IN; Overall Diameter: 13.000 INCHES NOMINAL IN; General Characteristics Item Description: PRESSURE REDUCING; FLANGED FITTINGS; End Item Identification: 170 FT PATROL COASTAL (PC-1) CLASS SHIPS FT. 3 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.