The Periscope Subassembly, cataloged under National Stock Number 1240-01-329-8434, is classified within Federal Supply Class 1240 (Optical Sighting and Ranging Equipment) of the Fire Control Equipment group. The manufacturer of record is Naval Sea Systems Command. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1240-01-329-8434 |
| Primary Part Number | 6537780 |
| Item Name | Periscope Subassembly |
| FSC / FSG | 1240 / 12 — Optical Sighting and Ranging Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 6537780 | Manistique Mfg and Technology Inc (USA) |
| 6537780 PRIMARY | Naval Sea Systems Command (USA) |
| 6537780 | Scandia Manufacturing Co., Inc. (USA) |
| Reference | Meaning |
|---|---|
| 2070-102ITEM11 | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| 2070-31ITEM11 | C/1 Advisory reference — outside the item-of-supply concept Naval Inventory Control Point Mechanicsburg |
| 2070-31ITEM11 | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
| A8810307 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 1240-01-329-8434 is a Periscope Subassembly, manufactured by Naval Sea Systems Command, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.
NSN 1240-01-329-8434 has 3 manufacturer part numbers on file: 6537780 (Manistique Mfg and Technology Inc), 6537780 (Naval Sea Systems Command), 6537780 (Scandia Manufacturing Co., Inc.).
Key specifications for 6537780: End Item Identification: PERISCOPE MISC HOUSING FITTINGS. 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.
NSN 1240-01-329-8434 has DEMIL Code D. 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.