The Filter,light,interference, cataloged under National Stock Number 6650-01-321-2905, is classified within Federal Supply Class 6650 (Optical Instruments, Test Equipment, Components and Accessories) of the Instruments and Laboratory Equipment group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6650-01-321-2905 |
| Item Name | Filter,light,interference |
| FSC / FSG | 6650 / 66 — Optical Instruments, Test Equipment, Components and Accessories |
| Status | ACTIVE |
| Overall Diameter | 1.312 INCHES NOMINAL IN |
| Style Designator | FLAT |
| Purchase Description Identification | 21205-A3140640 |
| Eyepiece Type for Which Designed | BINOCULAR |
| Specific Use | PROTECT LENS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| MX-11391/PVS-7 | 5/9 Secondary reference U.S. Government activity |
| A3140640 | 5/9 Secondary reference L3 Technologies, Inc. Dba Insight Technology Division Div Insight Technology Division |
| A3140640 | 3/2 Design control — primary reference U.S. Government activity |
| MX-11391/PVS-7A | 5/2 Secondary reference U.S. Government activity |
NSN 6650-01-321-2905 is a Filter,light,interference, classified under FSC 6650, Optical Instruments, Test Equipment, Components and Accessories. Status: active.
Key specifications for 6650-01-321-2905: Overall Diameter: 1.312 INCHES NOMINAL IN; Style Designator: FLAT; Overall Length: 0.250 INCHES NOMINAL IN; Purchase Description Identification: 21205-A3140640. 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 6650-01-321-2905 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.