The Lens,optical Instrument, cataloged under National Stock Number 6650-00-520-4648, 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 Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate. Government technical data includes 12 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6650-00-520-4648 |
| Primary Part Number | 5204648 |
| Item Name | Lens,optical Instrument |
| FSC / FSG | 6650 / 66 — Optical Instruments, Test Equipment, Components and Accessories |
| Manufacturer | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| Status | ACTIVE |
| FSC Application Data | TELESCOPE,OPTICAL,INTEGRATED WITH FIRE CONTROL EQUIP |
| Individual Lens Style | PLANO-CONVEX |
| Back Focal Length | 0.871 INCHES IN |
| Front Focal Length | 0.717 INCHES IN |
| Equivalent Focal Length | 0.968 INCHES IN |
| Material Document and Classification | MIL-G-174, CLASS 1, GRADE C, TYPE 580-410 MIL SPEC SINGLE MATERIAL RESPONSE |
| Diameter | 0.588 INCHES MINIMUM AND 0.594 INCHES MAXIMUM IN |
| Abbe Constant | 41.000 |
| Axial Thickness | 0.144 INCHES MINIMUM AND 0.164 INCHES MAXIMUM IN |
| Material | GLASS OPTICAL |
| Refraction Index | 1.5800 NOMINAL |
| Single Lens Style | PLANO-CONVEX |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 5204648 PRIMARY | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA) |
NSN 6650-00-520-4648 is a Lens,optical Instrument, manufactured by Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate, classified under FSC 6650, Optical Instruments, Test Equipment, Components and Accessories. Status: active.
NSN 6650-00-520-4648 has 1 manufacturer part number on file: 5204648 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate).
1 possible match (shared part number, not a government interchangeability claim): 5945-01-274-1524. Verify interchangeability with system specifications before substitution.
Key specifications for 5204648: FSC Application Data: TELESCOPE,OPTICAL,INTEGRATED WITH FIRE CONTROL EQUIP; Individual Lens Style: PLANO-CONVEX; Back Focal Length: 0.871 INCHES IN; Front Focal Length: 0.717 INCHES IN. 12 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.