The Lamphouse Assembly,microscope, cataloged under National Stock Number 6640-01-653-9523, is classified within Federal Supply Class 6640 (Laboratory Equipment and Supplies) of the Instruments and Laboratory Equipment group. The manufacturer of record is Olympus America 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Parameter | Value |
|---|---|
| NSN | 6640-01-653-9523 |
| Primary Part Number | 5-UL315 |
| Item Name | Lamphouse Assembly,microscope |
| FSC / FSG | 6640 / 66 — Laboratory Equipment and Supplies |
| Manufacturer | Olympus America Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 5-UL315 PRIMARY | Olympus America Inc (USA) |
| Reference | Meaning |
|---|---|
| 6640NCM162702 | 5/1 Secondary reference Defense Medical Standardization Board |
| 1401686 | 5/1 Secondary reference U.S. Government activity |
NSN 6640-01-653-9523 is a Lamphouse Assembly,microscope, manufactured by Olympus America Inc, classified under FSC 6640, Laboratory Equipment and Supplies. Status: active.
NSN 6640-01-653-9523 has 1 manufacturer part number on file: 5-UL315 (Olympus America Inc).
1 possible match (shared part number, not a government interchangeability claim): 6630-01-653-9738. Verify interchangeability with system specifications before substitution.
Key specifications for 5-UL315: Special Features: LAMPHOUSE ASSEMBLY, MICROSCOPE, LED WHITE; FOR USE WITH BX43 MICROSCOPE NSN: 6440-01-652-5240; PRODUCT DEVICE CODE, 15156; Part Name Assigned by Controlling Agency: LAMPHOUSE ASSEMBLY, MICROSCOPE; End Item Identification: 6440-01-652-5240; MICROSCOPE, LABORATORY. 0 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.