The Ring,lens Deblocking, cataloged under National Stock Number 6540-01-612-1950, is classified within Federal Supply Class 6540 (Ophthalmic Instruments, Equipment, and Supplies) of the Medical, Dental, and Veterinary Equipment group. The manufacturer of record is Lyric Optical Company, Inc. Div Lyric Optical Dba Super Optical International. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 6540-01-612-1950 |
| Primary Part Number | FE DBLK RING LG |
| Item Name | Ring,lens Deblocking |
| FSC / FSG | 6540 / 65 — Ophthalmic Instruments, Equipment, and Supplies |
| Manufacturer | Lyric Optical Company, Inc. Div Lyric Optical Dba Super Optical International |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Unit of Issue | EA |
| Part Number | Manufacturer |
|---|---|
| FE DBLK RING LG PRIMARY | Lyric Optical Company, Inc. Div Lyric Optical Dba Super Optical International (USA) |
| Reference | Meaning |
|---|---|
| 6540NCM128371 | 5/1 Secondary reference Defense Medical Standardization Board |
| 228878 | 5/1 Secondary reference U.S. Government activity |
NSN 6540-01-612-1950 is a Ring,lens Deblocking, manufactured by Lyric Optical Company, Inc. Div Lyric Optical Dba Super Optical International, classified under FSC 6540, Ophthalmic Instruments, Equipment, and Supplies. Status: active.
NSN 6540-01-612-1950 has 1 manufacturer part number on file: FE DBLK RING LG (Lyric Optical Company, Inc. Div Lyric Optical Dba Super Optical International).
Key specifications for FE DBLK RING LG: Special Features: RING, LENS DEBLOCKING; DEVICE REMOVES THE LENS FROM BLOCK; Part Name Assigned by Controlling Agency: RING LENS DEBLOCKING; End Item Identification: 6540-01-604-9603 OPHTHALMIC LENS FABRICATION SYSTEM. 0 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.