The Lens,optical Instrument, cataloged under National Stock Number 6650-01-202-0595, 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 7 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 6650-01-202-0595 |
| Item Name | Lens,optical Instrument |
| FSC / FSG | 6650 / 66 — Optical Instruments, Test Equipment, Components and Accessories |
| Status | ACTIVE |
| Back Focal Length | 2.044 INCHES IN |
| Equivalent Focal Length | 2.442 INCHES IN |
| Material Document and Classification | MIL-G-174,GRADE A MIL SPEC 1ST MATERIAL RESPONSE AND MIL-G-174,GRADE B MIL SPEC 2ND MATERIAL RESPONSE |
| Diameter | 2.198 INCHES MINIMUM AND 2.200 INCHES MAXIMUM IN |
| Axial Thickness | 0.591 INCHES MINIMUM AND 0.601 INCHES MAXIMUM IN |
| Material | GLASS OPTICAL |
| Single Lens Style | MENISCUS CONVERGING |
| 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 |
|---|---|
| SM-D-805013 | 3/2 Design control — primary reference U.S. Government activity |
NSN 6650-01-202-0595 is a Lens,optical Instrument, classified under FSC 6650, Optical Instruments, Test Equipment, Components and Accessories. Status: active.
Key specifications for 6650-01-202-0595: Back Focal Length: 2.044 INCHES IN; Equivalent Focal Length: 2.442 INCHES IN; Material Document and Classification: MIL-G-174,GRADE A MIL SPEC 1ST MATERIAL RESPONSE AND MIL-G-174,GRADE B MIL SPEC 2ND MATERIAL RESPONSE; Diameter: 2.198 INCHES MINIMUM AND 2.200 INCHES MAXIMUM IN. 7 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.