The Stool,optometry, cataloged under National Stock Number 6540-01-156-8109, is classified within Federal Supply Class 6540 (Ophthalmic Instruments, Equipment, and Supplies) of the Medical, Dental, and Veterinary Equipment group. Government technical data includes 2 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 6540-01-156-8109 |
| Item Name | Stool,optometry |
| FSC / FSG | 6540 / 65 — Ophthalmic Instruments, Equipment, and Supplies |
| Status | ACTIVE |
| Unit of Issue Cube | 1.25 CUBIC FEET |
| General Characteristics Item Description | COMPONENT OF MEDICAL EQUIPMENT SET,OPTOMETRY SET |
| 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 |
| Reference | Meaning |
|---|---|
| 2-881-A | 3/2 Design control — primary reference U.S. Government activity |
NSN 6540-01-156-8109 is a Stool,optometry, classified under FSC 6540, Ophthalmic Instruments, Equipment, and Supplies. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6150-01-387-1836. Verify interchangeability with system specifications before substitution.
Key specifications for 6540-01-156-8109: Unit of Issue Cube: 1.25 CUBIC FEET; General Characteristics Item Description: COMPONENT OF MEDICAL EQUIPMENT SET,OPTOMETRY SET; Part Name Assigned by Controlling Agency: STOOL OPTOMETRY. 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.