The Blocks,optical Fabrication, cataloged under National Stock Number 6540-01-451-7966, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: PG.
| Parameter | Value |
|---|---|
| NSN | 6540-01-451-7966 |
| Primary Part Number | 170411 |
| Item Name | Blocks,optical Fabrication |
| FSC / FSG | 6540 / 65 — Ophthalmic Instruments, Equipment, and Supplies |
| Manufacturer | Gerber Coburn Optical, Inc |
| Status | ACTIVE |
| General Characteristics Item Description | RED; 2 DIOPTER BASE CURVE BLOCKS; FOR USE WITH GERBER STEP ONESYSTEM; UNIT PKG QTY: 10 BLOCKS |
| 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 | PG |
| Part Number | Manufacturer |
|---|---|
| 170411 PRIMARY | Gerber Coburn Optical, Inc (USA) |
| Reference | Meaning |
|---|---|
| 97-0864 | 5/1 Secondary reference U.S. Government activity |
NSN 6540-01-451-7966 is a Blocks,optical Fabrication, manufactured by Gerber Coburn Optical, Inc, classified under FSC 6540, Ophthalmic Instruments, Equipment, and Supplies. Status: active.
NSN 6540-01-451-7966 has 1 manufacturer part number on file: 170411 (Gerber Coburn Optical, Inc).
Key specifications for 170411: General Characteristics Item Description: RED; 2 DIOPTER BASE CURVE BLOCKS; FOR USE WITH GERBER STEP ONESYSTEM; UNIT PKG QTY: 10 BLOCKS; Part Name Assigned by Controlling Agency: BLOCKS OPTICAL FABR RED 2 DIOPTER BASE CURVE U/W GERBER ONE STEP 10S. 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.