The Lower Mount Assy, cataloged under National Stock Number 1090-01-568-4515, is classified within Federal Supply Class 1090 (Assemblies Interchangeable Between Weapons in Two or More Classes) of the Weapons group. The manufacturer of record is Hydraulics International, Inc. Dba Hydraulics International Inc. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Item Name | Lower Mount Assy |
| FSC / FSG | 1090 — Assemblies Interchangeable Between Weapons in Two or More Classes (FSG 10) |
| Manufacturers | Hydraulics International, Inc. Dba Hydraulics International Inc (CAGE 56529) |
| Parameter | Value |
|---|---|
| NSN | 1090-01-568-4515 |
| Primary Part Number | 3305AS1514-1 |
| Item Name | Lower Mount Assy |
| FSC / FSG | 1090 / 10 — Assemblies Interchangeable Between Weapons in Two or More Classes |
| Manufacturer | Hydraulics International, Inc. Dba Hydraulics International Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 3305AS1514-1 PRIMARY | Hydraulics International, Inc. Dba Hydraulics International Inc (USA) |
| Reference | Meaning |
|---|---|
| 3305AS1514 | D/9 Drawing number reference only Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
NSN 1090-01-568-4515 is a Lower Mount Assy, manufactured by Hydraulics International, Inc. Dba Hydraulics International Inc, classified under FSC 1090, Assemblies Interchangeable Between Weapons in Two or More Classes. Status: active.
NSN 1090-01-568-4515 has 1 manufacturer part number on file: 3305AS1514-1 (Hydraulics International, Inc. Dba Hydraulics International Inc).
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
NSN 1090-01-568-4515 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.