The Holder,optical Element, cataloged under National Stock Number 1240-01-498-3592, 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. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1240-01-498-3592 |
| Primary Part Number | 5612974 |
| Item Name | Holder,optical Element |
| FSC / FSG | 1240 / 12 — Optical Sighting and Ranging Equipment |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Material | STEEL CORROSION RESISTING |
| 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 |
|---|---|
| 5612974 PRIMARY | Naval Sea Systems Command (USA) |
NSN 1240-01-498-3592 is a Holder,optical Element, manufactured by Naval Sea Systems Command, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.
NSN 1240-01-498-3592 has 1 manufacturer part number on file: 5612974 (Naval Sea Systems Command).
Key specifications for 5612974: Overall Length: 1.025 INCHES NOMINAL IN; Overall Width: 2.370 INCHES MINIMUM AND 2.373 INCHES MAXIMUM IN; Special Features: EYEPIECE LENS CELL USED TO HOUSE LENS EI-1,-2, AND -3.; End Item Identification: FC33 ELECTRIC AND ELECTRONIC ADAPTER; NEXT ASSY: PN 5612978 NSN 1240-01-498-3538; END ITEM: PERISCOPE.. 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.
NSN 1240-01-498-3592 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.