The Periscope Subassembly, cataloged under National Stock Number 1240-01-264-2303, is classified within Federal Supply Class 1240 (Optical Sighting and Ranging Equipment) of the Fire Control Equipment group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1240-01-264-2303 |
| Item Name | Periscope Subassembly |
| FSC / FSG | 1240 / 12 — Optical Sighting and Ranging Equipment |
| Status | ACTIVE |
| Major Components | HOUSING HEAD 1;WINDOW ASSY 1;BEAMSPLITTER ASS 1;MIRROR ASSY,HEAD 1;WEDGE ASSY 1;POST AMP CARRIER BOARD ASSY 1;BELT TENSION ASSY 1;SHAFT ADJUSTMENT ASSY 1;CLAMP,POST AMP 1;SCREW 77;BEARING 1;CABLE ASSY 1;HOUSING,BEARING 1;BOX,POST AMP 1;HOUSING,SCAN DRIVE 1;HOUSING,BITE 1;BAND,HEAD MIRROR DRIVE 1;MOUNT,BEARING 1;GASKET 1;MOUNT,CONNECTORS 1;WASHER 93;VALVE 1;WINDOW,8X 1;LENS,LED NO.5 1;LENS,1R RETICLE,NO.1 1;NUT 5;PACKING 1;PIN,WEDGE,STOP 1;CLEAT,CABLE TIE 3;TIE,CABLE 3;CLAMP 1;RETAINER,BEARING,HOUSING 1;RETAINER,BEARING 1;WASHER,FLAT 2;COVER,SHIELD,SOLAR 1;BRACE,SHIELD,SOLAR 1 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
| Reference | Meaning |
|---|---|
| SM-D-805094 | 3/2 Design control — primary reference U.S. Government activity |
NSN 1240-01-264-2303 is a Periscope Subassembly, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.
Key specifications for 1240-01-264-2303: Major Components: HOUSING HEAD 1;WINDOW ASSY 1;BEAMSPLITTER ASS 1;MIRROR ASSY,HEAD 1;WEDGE ASSY 1;POST AMP CARRIER BOARD ASSY 1;BELT TENSION ASSY 1;SHAFT ADJUSTMENT ASSY 1;CLAMP,POST AMP 1;SCREW 77;BEARING 1;CABLE ASSY 1;HOUSING,BEARING 1;BOX,POST AMP 1;HOUSING,SCAN DRIVE 1;HOUSING,BITE 1;BAND,HEAD MIRROR DRIVE 1;MOUNT,BEARING 1;GASKET 1;MOUNT,CONNECTORS 1;WASHER 93;VALVE 1;WINDOW,8X 1;LENS,LED NO.5 1;LENS,1R RETICLE,NO.1 1;NUT 5;PACKING 1;PIN,WEDGE,STOP 1;CLEAT,CABLE TIE 3;TIE,CABLE 3;CLAMP 1;RETAINER,BEARING,HOUSING 1;RETAINER,BEARING 1;WASHER,FLAT 2;COVER,SHIELD,SOLAR 1;BRACE,SHIELD,SOLAR 1. 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 1240-01-264-2303 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.