The Molding Compound,monomer, cataloged under National Stock Number 6540-01-504-0413, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active. Unit of issue: PG.
| Parameter | Value |
|---|---|
| NSN | 6540-01-504-0413 |
| Primary Part Number | OPTICAST MONOMER |
| Item Name | Molding Compound,monomer |
| 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 | PG |
| Part Number | Manufacturer |
|---|---|
| OPTICAST MONOMER PRIMARY | Opticast Inc (USA) |
| Reference | Meaning |
|---|---|
| 6540NCM021749 | 5/1 Secondary reference Defense Medical Standardization Board |
| 02-2378 | 5/1 Secondary reference U.S. Government activity |
NSN 6540-01-504-0413 is a Molding Compound,monomer, manufactured by Opticast Inc, classified under FSC 6540, Ophthalmic Instruments, Equipment, and Supplies. Status: active.
NSN 6540-01-504-0413 has 1 manufacturer part number on file: OPTICAST MONOMER (Opticast Inc).
1 possible match (shared part number, not a government interchangeability claim): 3895-01-678-2885. Verify interchangeability with system specifications before substitution.
Key specifications for OPTICAST MONOMER: Special Features: MOLDING SOLUTION WITH 50 GASKETS; Part Name Assigned by Controlling Agency: OPTICAST MONOMER MOLDING COMPOUND W/50 GASKETS USE WITH 6540-01-504-0426; End Item Identification: FOR USE WITH NSN 6540-01-504-0426, OPTICAST SYSTEM, MOLDING LENS. 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.