The Lens,optical Instrument, cataloged under National Stock Number 6650-00-382-1963, 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 14 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6650-00-382-1963 |
| Item Name | Lens,optical Instrument |
| FSC / FSG | 6650 / 66 — Optical Instruments, Test Equipment, Components and Accessories |
| Status | ACTIVE |
| FSC Application Data | FIRE CONTROL PERISCOPE MK 28,MOD O,1 |
| Individual Lens Style | DOUBLE CONVEX AND MENISCUS DIVERGING |
| Back Focal Length | 2.794 INCHES IN |
| Front Focal Length | 2.993 INCHES IN |
| Equivalent Focal Length | 3.114 INCHES IN |
| Material Document and Classification | JAN-G-174, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE |
| Diameter | 1.583 INCHES NOMINAL IN |
| Abbe Constant | 64.400 AND 33.800 |
| Axial Thickness | 0.500 INCHES NOMINAL AND 0.157 INCHES NOMINAL IN |
| Compound Lens Edge Thickness | 0.409 INCHES NOMINAL IN |
| Material | GLASS OPTICAL |
| Refraction Index | 1.5169 NOMINAL AND 1.6488 NOMINAL |
| Compound Lens Style | DOUBLET |
| Compound Lens Overall Axial Thickness | 0.657 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 |
|---|---|
| LD172600PC28 | 3/9 Design control — primary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| LD172600PC28 | 5/9 Secondary reference Naval Sea Systems Command |
NSN 6650-00-382-1963 is a Lens,optical Instrument, classified under FSC 6650, Optical Instruments, Test Equipment, Components and Accessories. Status: active.
Key specifications for 6650-00-382-1963: FSC Application Data: FIRE CONTROL PERISCOPE MK 28,MOD O,1; Individual Lens Style: DOUBLE CONVEX AND MENISCUS DIVERGING; Back Focal Length: 2.794 INCHES IN; Front Focal Length: 2.993 INCHES IN. 14 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 6650-00-382-1963 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.