The Lens,optical Instrument, cataloged under National Stock Number 6650-00-157-4147, is classified within Federal Supply Class 6650 (Optical Instruments, Test Equipment, Components and Accessories) of the Instruments and Laboratory Equipment group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6650-00-157-4147 |
| Primary Part Number | 203035PC16 |
| Item Name | Lens,optical Instrument |
| FSC / FSG | 6650 / 66 — Optical Instruments, Test Equipment, Components and Accessories |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Individual Lens Style | DOUBLE CONVEX AND MENISCUS DIVERGING |
| Back Focal Length | 3.451 CENTIMETERS CM |
| Front Focal Length | 4.117 CENTIMETERS CM |
| Element Left Surface Radius | 21.6 MILLIMETERS AND -17.3 MILLIMETERS MM |
| Equivalent Focal Length | 4.084 CENTIMETERS CM |
| Element Right Surface Radius | 17.3 MILLIMETERS AND 296.0 MILLIMETERS MM |
| Diameter | 22.0 MILLIMETERS NOMINAL MM |
| Abbe Constant | 33.800 AND 57.400 |
| Axial Thickness | 7.5 MILLIMETERS NOMINAL AND 2.0 MILLIMETERS NOMINAL MM |
| Compound Lens Edge Thickness | 5.0 MILLIMETERS NOMINAL MM |
| Material | GLASS OPTICAL |
| Refraction Index | 1.6490 NOMINAL AND 1.5725 NOMINAL |
| Compound Lens Style | DOUBLET |
| Compound Lens Overall Axial Thickness | 9.5 MILLIMETERS NOMINAL MM |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 203035PC16 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 203035PC16 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| G8111PC16 | 5/9 Secondary reference Keuffel and Esser Co Lse Opns |
NSN 6650-00-157-4147 is a Lens,optical Instrument, manufactured by Naval Sea Systems Command, classified under FSC 6650, Optical Instruments, Test Equipment, Components and Accessories. Status: active.
NSN 6650-00-157-4147 has 1 manufacturer part number on file: 203035PC16 (Naval Sea Systems Command).
Key specifications for 203035PC16: Individual Lens Style: DOUBLE CONVEX AND MENISCUS DIVERGING; Back Focal Length: 3.451 CENTIMETERS CM; Front Focal Length: 4.117 CENTIMETERS CM; Element Left Surface Radius: 21.6 MILLIMETERS AND -17.3 MILLIMETERS MM. 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 6650-00-157-4147 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.