The Light,slit,ophthalmic, cataloged under National Stock Number 6540-01-182-3770, 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 Defense Medical Standardization Board. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active. Unit of issue: EA.
| Item Name | Light,slit,ophthalmic |
| FSC / FSG | 6540 — Ophthalmic Instruments, Equipment, and Supplies (FSG 65) |
| Manufacturers | Defense Medical Standardization Board (CAGE 64616) |
| Parameter | Value |
|---|---|
| NSN | 6540-01-182-3770 |
| Primary Part Number | CN 4-317-P |
| Item Name | Light,slit,ophthalmic |
| FSC / FSG | 6540 / 65 — Ophthalmic Instruments, Equipment, and Supplies |
| Manufacturer | Defense Medical Standardization Board |
| Status | ACTIVE |
| Voltage Rating in Volts | 120.0 AC MINIMUM AND 230.0 AC MAXIMUM |
| 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 |
|---|---|
| CN 4-317-P PRIMARY | Defense Medical Standardization Board (USA) |
NSN 6540-01-182-3770 is a Light,slit,ophthalmic, manufactured by Defense Medical Standardization Board, classified under FSC 6540, Ophthalmic Instruments, Equipment, and Supplies. Status: active.
NSN 6540-01-182-3770 has 1 manufacturer part number on file: CN 4-317-P (Defense Medical Standardization Board).
Key specifications for CN 4-317-P: Special Features: 50/60 HZ; ADJUSTABLE HEAD AND CHIN REST,80 MM MINIMUM; REVOLVER TYPE MAGNIFICATION CHANGING SYSTEM WITH VIEWING MAGNIFICATIONS OF 10X,16X,25X,AND 40X; BINOCULAR MOUNTED HORIZONTALLY; SLIT LAMP WIDTH,FROM 0 MM TO 8 MM; SLIT LENGTH,FROM 1 MM TO 8 MM; APERATURE DIAPHRAGMS WITH DIAMETERS OF 8 MM,5 MM,3 MM,2 MM,1 MM AND 0.2 MM; SLIT ANGLE,CONTINUOUSLY VARIABLE THROUGH 90 DEGREES FROM VERTICAL TO HORIZONTAL; TWO BUILT-IN FILTERS,BLUE AND RED-FREE; SLIT LAMP COMPONENTS: HRUBY LENS; FOCUSING SPOT; FIXATION DEVICE; EYEPIECES,10X AND 16X; CHIN REST TISSUES; SPARE ILLUMINATION BULBS; FIXATION BULBS AND FUSES; HAAG-STREIT APPLANATION TONOMETER; ADJUSTABLE INSTRUMENT TABLE MM; Part Name Assigned by Controlling Agency: LIGHT SLIT: OPHTHALMOLOGICAL BASE MOUNT ADJ VARIABL VOLTAGE TYPE; Voltage Rating in Volts: 120.0 AC MINIMUM AND 230.0 AC MAXIMUM. 1 specification is 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.