The Blocking System,optical Fabricat, cataloged under National Stock Number 6540-01-451-9823, 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 Gerber Coburn Optical, Inc. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 6540-01-451-9823 |
| Primary Part Number | 192751 |
| Item Name | Blocking System,optical Fabricat |
| FSC / FSG | 6540 / 65 — Ophthalmic Instruments, Equipment, and Supplies |
| Manufacturer | Gerber Coburn Optical, Inc |
| Status | ACTIVE |
| General Characteristics Item Description | INCLUDES THE GERBER STEP ONE WORKSTATION, SURFACING BLOCKS, LENS WASHING STATION, BLOCKING RING KIT , STORAGE PACKS AND STARTER SUPPLIES |
| 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 |
|---|---|
| 192751 PRIMARY | Gerber Coburn Optical, Inc (USA) |
| Reference | Meaning |
|---|---|
| STEP ONE BLOCKING SYSTEM | 5/1 Secondary reference Gerber Coburn Optical, Inc |
| 192751 | 5/9 Secondary reference Gerber Coburn Optical Industries Inc |
| 97-0871 | 5/1 Secondary reference U.S. Government activity |
NSN 6540-01-451-9823 is a Blocking System,optical Fabricat, manufactured by Gerber Coburn Optical, Inc, classified under FSC 6540, Ophthalmic Instruments, Equipment, and Supplies. Status: active.
NSN 6540-01-451-9823 has 1 manufacturer part number on file: 192751 (Gerber Coburn Optical, Inc).
1 possible match (shared part number, not a government interchangeability claim): 5331-01-607-6628. Verify interchangeability with system specifications before substitution.
Key specifications for 192751: General Characteristics Item Description: INCLUDES THE GERBER STEP ONE WORKSTATION, SURFACING BLOCKS, LENS WASHING STATION, BLOCKING RING KIT , STORAGE PACKS AND STARTER SUPPLIES; Part Name Assigned by Controlling Agency: BLOCKING SYSTEM OPTICAL FABRCTN GERBER STEP ONE WORK STATION. 1 specification is 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.