The Phoropter, cataloged under National Stock Number 6540-01-530-3634, 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 Lombart Brothers, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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: EA.
| Parameter | Value |
|---|---|
| NSN | 6540-01-530-3634 |
| Primary Part Number | 11635B |
| Item Name | Phoropter |
| FSC / FSG | 6540 / 65 — Ophthalmic Instruments, Equipment, and Supplies |
| Manufacturer | Lombart Brothers, 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 |
|---|---|
| 11635B PRIMARY | Lombart Brothers, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 6540NCM050928 | 5/1 Secondary reference Defense Medical Standardization Board |
| 05-0887 | 5/1 Secondary reference U.S. Government activity |
NSN 6540-01-530-3634 is a Phoropter, manufactured by Lombart Brothers, Inc., classified under FSC 6540, Ophthalmic Instruments, Equipment, and Supplies. Status: active.
NSN 6540-01-530-3634 has 1 manufacturer part number on file: 11635B (Lombart Brothers, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 2590-01-557-6269. Verify interchangeability with system specifications before substitution.
Key specifications for 11635B: Special Features: NONLIGHTED; PLUS CYLINDER LENS TYPE; FOR USE IN OPHTHALMOLOGY CLINIC; Part Name Assigned by Controlling Agency: PHOROPTER NONLIGHTED PLUS CYLINDER 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.