The Periscope Subassembly, cataloged under National Stock Number 1240-01-073-7286, is classified within Federal Supply Class 1240 (Optical Sighting and Ranging Equipment) of the Fire Control Equipment group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1240-01-073-7286 |
| Primary Part Number | 12266855 |
| Item Name | Periscope Subassembly |
| FSC / FSG | 1240 / 12 — Optical Sighting and Ranging Equipment |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Major Components | TUBE 1;FLANGE 1;CAP 1 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 1240-01-073-7286 is a Periscope Subassembly, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 1240, Optical Sighting and Ranging Equipment. Status: active.
NSN 1240-01-073-7286 has 2 manufacturer part numbers on file: 048055 (L3 Technologies, Inc. Div L3 Keo), 12266855 (U S Army Tank Automotive Command Amsta-Im-Mm).
Key specifications for 12266855: Major Components: TUBE 1;FLANGE 1;CAP 1; Special Features: INSIDE DIA OF TUBE 4.502 IN;THK 0F FLANGE 0.470 IN;TUBE LENGTH UNASSEMBED 18.568 IN;TUBE LENGTH ASSEMBLED 20.158IN;DIM INCLUDE CHEMICAL OR PLATED FINISHES ONLY;MUST BE GAS TIGHT TO 40 PSIG;FINISH:NO. 90 GRIT ALUM OXIDE SHOTBLAST ALL EXTERIOR SURFACES EXCEPT AREAS MARKED NC:IRON PHOSPHATE COAT PER TT-C-490.MTHD 1,TYPE 2:COAT ALL EXTERIOR SURFACES INCLUDING BOLT HOLES USING PRIMER P COATING PRETREATMENT AND NYLON COATING TYPE 2 PLASTONIC MATL NO.107,.010 TO .015 THK:COLOR,OLIVE DRAB PER,FED-STD-595,COLOR CHIP NO.14064(GLOSS)EXCEPT AREAS MARKED NC:AFTER COATING,GLASS BEAD ABRASIVE SHOT BLAST,SIZE MS-ML OVER AREA MARKED S;SPILLOVER ACCEPTABLE IN AREAS MARKED SP IN. 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 1240-01-073-7286 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.