The Lens,ophthalmic,compound, cataloged under National Stock Number 6540-01-089-0331, 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 Square D Co Monroe Plant. Government technical data includes 11 specifications, 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. Current acquisition status: Active. Unit of issue: PR.
| Parameter | Value |
|---|---|
| NSN | 6540-01-089-0331 |
| Primary Part Number | 9-312-2261 |
| Item Name | Lens,ophthalmic,compound |
| FSC / FSG | 6540 / 65 — Ophthalmic Instruments, Equipment, and Supplies |
| Manufacturer | Square D Co Monroe Plant |
| Status | ACTIVE |
| Supplementary Features | UNCUT |
| Style Designator | ROUND-RECTANGULAR WITH ROUNDED CORNERS |
| Diameter | 65.0 MILLIMETERS MINIMUM MM |
| Cross-Sectional Shape Style | SPHEROCYLINDER COMPOUND |
| Sphere Curve Inside Diopter | 4.25 PLUS MAXIMUM |
| Height | 68.0 MILLIMETERS NOMINAL MM |
| Width | 65.0 MILLIMETERS NOMINAL MM |
| Light Transmission | UNTINTED |
| Material | GLASS SINGLE VISION |
| Cylinder Curve Inside Diopter | 4.25 MINUS MAXIMUM |
| Thickness | 2.2 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 |
| Part Number | Manufacturer |
|---|---|
| 9-312-2261 PRIMARY | Square D Co Monroe Plant (USA) |
NSN 6540-01-089-0331 is a Lens,ophthalmic,compound, manufactured by Square D Co Monroe Plant, classified under FSC 6540, Ophthalmic Instruments, Equipment, and Supplies. Status: active.
NSN 6540-01-089-0331 has 1 manufacturer part number on file: 9-312-2261 (Square D Co Monroe Plant).
Key specifications for 9-312-2261: Supplementary Features: UNCUT; Style Designator: ROUND-RECTANGULAR WITH ROUNDED CORNERS; Diameter: 65.0 MILLIMETERS MINIMUM MM; Cross-Sectional Shape Style: SPHEROCYLINDER COMPOUND. 11 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.