The Window,optical Instrument, cataloged under National Stock Number 6650-01-424-2489, is classified within Federal Supply Class 6650 (Optical Instruments, Test Equipment, Components and Accessories) of the Instruments and Laboratory Equipment group. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6650-01-424-2489 |
| Item Name | Window,optical Instrument |
| FSC / FSG | 6650 / 66 — Optical Instruments, Test Equipment, Components and Accessories |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| B61781-01 | 3/2 Design control — primary reference U.S. Government activity |
| 20266 | D/9 Drawing number reference only U.S. Government activity |
NSN 6650-01-424-2489 is a Window,optical Instrument, classified under FSC 6650, Optical Instruments, Test Equipment, Components and Accessories. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 4440-01-508-1336, 5970-01-536-6196. Verify interchangeability with system specifications before substitution.
Key specifications for 6650-01-424-2489: End Item Identification: HONEY COMBE DESICCANT DEHUMIDIFIER,MODEL GC-150;SEAWOLF CLASS SSN CAGE 53711. 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.
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.