The Lens,ophthalmic,compound, cataloged under National Stock Number 6540-00-142-7553, is classified within Federal Supply Class 6540 (Ophthalmic Instruments, Equipment, and Supplies) of the Medical, Dental, and Veterinary Equipment group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: PR.
| Parameter | Value |
|---|---|
| NSN | 6540-00-142-7553 |
| Item Name | Lens,ophthalmic,compound |
| FSC / FSG | 6540 / 65 — Ophthalmic Instruments, Equipment, and Supplies |
| Status | ACTIVE |
| Base Curve Diopter | 2.00 MINUS NOMINAL |
| Supplementary Features | UNCUT |
| Style Designator | ROUND-RECTANGULAR WITH ROUNDED CORNERS |
| Diameter | 58.0 MILLIMETERS NOMINAL MM |
| Cross-Sectional Shape Style | SPHEROCYLINDER COMPOUND |
| Nondefinitive Spec/std Data | 2 TYPE AND 4 STYLE AND D CLASS |
| Height | 56.5 MILLIMETERS NOMINAL MM |
| Width | 56.5 MILLIMETERS NOMINAL MM |
| Light Transmission | TINTED |
| Material | GLASS SINGLE VISION |
| Tinted Area Light Transmittance in Percent | 31.0 |
| Cross Curve Diopter | 1.00 PLUS NOMINAL |
| Thickness | 2.0 MILLIMETERS NOMINAL MM |
| 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 | PR |
| Reference | Meaning |
|---|---|
| MILL36460 | 4/1 Identification reference U.S. Government activity |
NSN 6540-00-142-7553 is a Lens,ophthalmic,compound, classified under FSC 6540, Ophthalmic Instruments, Equipment, and Supplies. Status: active.
Key specifications for 6540-00-142-7553: Base Curve Diopter: 2.00 MINUS NOMINAL; Supplementary Features: UNCUT; Style Designator: ROUND-RECTANGULAR WITH ROUNDED CORNERS; Diameter: 58.0 MILLIMETERS NOMINAL MM. 13 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.