The Starter Kit,ophthalmic Lens Wafe, cataloged under National Stock Number 6540-01-457-4482, 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 Diversified Optics 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 6540-01-457-4482 |
| Primary Part Number | FT-28 |
| Item Name | Starter Kit,ophthalmic Lens Wafe |
| FSC / FSG | 6540 / 65 — Ophthalmic Instruments, Equipment, and Supplies |
| Manufacturer | Diversified Optics Inc |
| Status | ACTIVE |
| General Characteristics Item Description | CONSISTS OF 233 PAIRS OF SINGLE VISION PACK WAFERS AND 185 PAIRS OF UNCOATED, FT-28 FRONT WAFERS FOR USE IN MAKING CR-39 LENS WITH POWERRANGE FROM +6.00 TO -6.00 WITH UP TO A -3.00 D CYL; ADDED POWERS ARE: +1.00 TO +3.00 D IN 0.25 D STEPS; PACKED IN TWO BOXES CONTAINING LENS SELECTION CHART; FOR CR-39 LENS ONLY |
| 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 |
|---|---|
| FT-28 PRIMARY | Diversified Optics Inc (USA) |
| Reference | Meaning |
|---|---|
| EV II STARTER KIT | 3/1 Design control — primary reference Diversified Optics Inc |
| 98-0480 | 5/1 Secondary reference U.S. Government activity |
NSN 6540-01-457-4482 is a Starter Kit,ophthalmic Lens Wafe, manufactured by Diversified Optics Inc, classified under FSC 6540, Ophthalmic Instruments, Equipment, and Supplies. Status: active.
NSN 6540-01-457-4482 has 1 manufacturer part number on file: FT-28 (Diversified Optics Inc).
Key specifications for FT-28: General Characteristics Item Description: CONSISTS OF 233 PAIRS OF SINGLE VISION PACK WAFERS AND 185 PAIRS OF UNCOATED, FT-28 FRONT WAFERS FOR USE IN MAKING CR-39 LENS WITH POWERRANGE FROM +6.00 TO -6.00 WITH UP TO A -3.00 D CYL; ADDED POWERS ARE: +1.00 TO +3.00 D IN 0.25 D STEPS; PACKED IN TWO BOXES CONTAINING LENS SELECTION CHART; FOR CR-39 LENS ONLY; Part Name Assigned by Controlling Agency: STARTER KIT OPHTHALMIC LENS WAFER SYSTEM. 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.