The Lens,optical Instrument, cataloged under National Stock Number 6650-00-155-3294, 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 16 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 6650-00-155-3294 |
| Item Name | Lens,optical Instrument |
| FSC / FSG | 6650 / 66 — Optical Instruments, Test Equipment, Components and Accessories |
| Status | ACTIVE |
| FSC Application Data | FIRE CONTROL,RANGE FINDER MK 63 |
| Individual Lens Style | DOUBLE CONVEX AND MENISCUS DIVERGING |
| Back Focal Length | 1.390 INCHES IN |
| Front Focal Length | 1.555 INCHES IN |
| Element Left Surface Radius | 3.711 INCHES AND 0.850 INCHES IN |
| Equivalent Focal Length | 1.590 INCHES IN |
| Element Right Surface Radius | -1.027 INCHES AND 0.850 INCHES IN |
| Material Document and Classification | JAN-G-174, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE |
| Diameter | 0.964 INCHES NOMINAL IN |
| Abbe Constant | 33.800 AND 57.400 |
| Axial Thickness | 0.078 INCHES NOMINAL AND 0.314 INCHES NOMINAL IN |
| Compound Lens Edge Thickness | 0.241 INCHES NOMINAL IN |
| Material | GLASS OPTICAL |
| Refraction Index | 1.6490 NOMINAL AND 1.5720 NOMINAL |
| Compound Lens Style | DOUBLET |
| Compound Lens Overall Axial Thickness | 0.393 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 322979PC2 | 3/9 Design control — primary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 6650-00-155-3294 is a Lens,optical Instrument, classified under FSC 6650, Optical Instruments, Test Equipment, Components and Accessories. Status: active.
Key specifications for 6650-00-155-3294: FSC Application Data: FIRE CONTROL,RANGE FINDER MK 63; Individual Lens Style: DOUBLE CONVEX AND MENISCUS DIVERGING; Back Focal Length: 1.390 INCHES IN; Front Focal Length: 1.555 INCHES IN. 16 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 6650-00-155-3294 has DEMIL Code Q. 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.