The Sphere Mold,glass Back, cataloged under National Stock Number 6540-01-508-1603, 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. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 6540-01-508-1603 |
| Primary Part Number | BM2.50 |
| Item Name | Sphere Mold,glass Back |
| FSC / FSG | 6540 / 65 — Ophthalmic Instruments, Equipment, and Supplies |
| Manufacturer | Opticast Inc |
| Status | ACTIVE |
| 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 |
|---|---|
| BM2.50 PRIMARY | Opticast Inc (USA) |
| Reference | Meaning |
|---|---|
| 6540NCM030698 | 5/1 Secondary reference Defense Medical Standardization Board |
| 03-0896 | 5/1 Secondary reference U.S. Government activity |
NSN 6540-01-508-1603 is a Sphere Mold,glass Back, manufactured by Opticast Inc, classified under FSC 6540, Ophthalmic Instruments, Equipment, and Supplies. Status: active.
NSN 6540-01-508-1603 has 1 manufacturer part number on file: BM2.50 (Opticast Inc).
Key specifications for BM2.50: Special Features: REPLACEMENT COMPONENT FOR GLSBM-180, GLASS BACK MOLDS; Part Name Assigned by Controlling Agency: MOLD SPHERE GLASS BACK 2.50 OPTICAL; End Item Identification: 6540-01-507-3503, GLSBM-180, GLASS BACK MOLD SET. 0 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.