The Lens,optical Instrument, cataloged under National Stock Number 6650-01-256-6561, 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 Rockwell Collins, Inc. Dba Rc Displays Systems. Government technical data includes 6 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6650-01-256-6561 |
| Primary Part Number | 122355-1 |
| Item Name | Lens,optical Instrument |
| FSC / FSG | 6650 / 66 — Optical Instruments, Test Equipment, Components and Accessories |
| Manufacturer | Rockwell Collins, Inc. Dba Rc Displays Systems |
| Status | ACTIVE |
| FSC Application Data | USED ON 1270012441884 |
| Material Document and Classification | MIL-G-174, TYPE SF-57, 847-238 MIL SPEC SINGLE MATERIAL RESPONSE |
| Diameter | 6.414 INCHES NOMINAL IN |
| Axial Thickness | 1.138 INCHES MINIMUM AND 1.142 INCHES MAXIMUM IN |
| Material | GLASS OPTICAL |
| Single Lens Style | PLANO-CONVEX |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 122355-1 PRIMARY | Rockwell Collins, Inc. Dba Rc Displays Systems (USA) |
NSN 6650-01-256-6561 is a Lens,optical Instrument, manufactured by Rockwell Collins, Inc. Dba Rc Displays Systems, classified under FSC 6650, Optical Instruments, Test Equipment, Components and Accessories. Status: active.
NSN 6650-01-256-6561 has 1 manufacturer part number on file: 122355-1 (Rockwell Collins, Inc. Dba Rc Displays Systems).
Key specifications for 122355-1: FSC Application Data: USED ON 1270012441884; Material Document and Classification: MIL-G-174, TYPE SF-57, 847-238 MIL SPEC SINGLE MATERIAL RESPONSE; Diameter: 6.414 INCHES NOMINAL IN; Axial Thickness: 1.138 INCHES MINIMUM AND 1.142 INCHES MAXIMUM IN. 6 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 6650-01-256-6561 has DEMIL Code D. 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.