The Window,optical Instrument, cataloged under National Stock Number 6650-01-172-9476, is classified within Federal Supply Class 6650 (Optical Instruments, Test Equipment, Components and Accessories) of the Instruments and Laboratory Equipment group. The manufacturer of record is Bae Systems Information and Electronic Systems Integration Inc.. Government technical data includes 5 specifications, 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6650-01-172-9476 |
| Primary Part Number | 1264-1653 |
| Item Name | Window,optical Instrument |
| FSC / FSG | 6650 / 66 — Optical Instruments, Test Equipment, Components and Accessories |
| Manufacturer | Bae Systems Information and Electronic Systems Integration Inc. |
| Status | ACTIVE |
| Surface Finish | POLISHED |
| Diameter | 2.870 INCHES NOMINAL IN |
| Polished Periphery | NOT PROVIDED |
| Polished Surface | BOTH |
| Thickness | 0.125 INCHES NOMINAL IN |
| 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 |
|---|---|
| 1264-1653 PRIMARY | Bae Systems Information and Electronic Systems Integration Inc. (USA) |
NSN 6650-01-172-9476 is a Window,optical Instrument, manufactured by Bae Systems Information and Electronic Systems Integration Inc., classified under FSC 6650, Optical Instruments, Test Equipment, Components and Accessories. Status: active.
NSN 6650-01-172-9476 has 1 manufacturer part number on file: 1264-1653 (Bae Systems Information and Electronic Systems Integration Inc.).
1 possible match (shared part number, not a government interchangeability claim): 5995-01-530-5682. Verify interchangeability with system specifications before substitution.
Key specifications for 1264-1653: Surface Finish: POLISHED; Diameter: 2.870 INCHES NOMINAL IN; Polished Periphery: NOT PROVIDED; Polished Surface: BOTH. 5 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 6650-01-172-9476 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.