The Mold,optical, cataloged under National Stock Number 6540-01-513-7073, 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 Opticast Inc. Government technical data includes 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active. Unit of issue: EA.
| Parameter | Value |
|---|---|
| NSN | 6540-01-513-7073 |
| Primary Part Number | BM4.50/1.75 |
| Item Name | Mold,optical |
| FSC / FSG | 6540 / 65 — Ophthalmic Instruments, Equipment, and Supplies |
| Manufacturer | Opticast Inc |
| Status | ACTIVE |
| Overall Diameter | 80.000 MILLIMETERS NOMINAL MM |
| Supplementary Features | REPLACEMENT COMPONENT OF P/N GLSBM-180 GLASS BACK MOLDS |
| 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 |
|---|---|
| BM4.50/1.75 PRIMARY | Opticast Inc (USA) |
| Reference | Meaning |
|---|---|
| 03-1788 | 5/1 Secondary reference U.S. Government activity |
| 6540NCM031491 | 5/1 Secondary reference Defense Medical Standardization Board |
NSN 6540-01-513-7073 is a Mold,optical, manufactured by Opticast Inc, classified under FSC 6540, Ophthalmic Instruments, Equipment, and Supplies. Status: active.
NSN 6540-01-513-7073 has 1 manufacturer part number on file: BM4.50/1.75 (Opticast Inc).
Key specifications for BM4.50/1.75: Overall Diameter: 80.000 MILLIMETERS NOMINAL MM; Supplementary Features: REPLACEMENT COMPONENT OF P/N GLSBM-180 GLASS BACK MOLDS; Special Features: GLASS BACK TORIC GLASS MOLD, 4.50/1.75; Part Name Assigned by Controlling Agency: GLASS BACK TORIC OPTICAL MOLD 4.50/1.75. 2 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.