PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

G-321Light,slit,ophthalmic

Defense Medical Standardization Board · NSN 6540-01-206-5933 · FSC 6540 · No Item Name Available
Verified by PartsTable
NSN 6540-01-206-5933 — this item is cataloged by the U.S. Government under National Stock Number 6540-01-206-5933. Primary manufacturer part number: G-321.
Features
  • Light,slit,ophthalmic — FSC 6540
  • Voltage Rating in Volts: 110.0 AC MINIMUM AND 220.0 AC MAXIMUM
  • Mounting Method: BASE
  • 1 verified cross-reference
  • Primary manufacturer: Defense Medical Standardization Board
Applications
  • Area illumination
  • Indicator and warning display
  • Navigation and signal lighting
General Description

The Light,slit,ophthalmic, cataloged under National Stock Number 6540-01-206-5933, is classified within Federal Supply Class 6540 (No Item Name Available) of the Medical, Dental, and Veterinary Equipment group. The primary manufacturer of record is Defense Medical Standardization Board. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6540-01-206-5933
Primary Part NumberG-321
Item NameLight,slit,ophthalmic
FSC / FSG6540 / 65 — No Item Name Available
ManufacturerDefense Medical Standardization Board
StatusACTIVE
Voltage Rating in Volts110.0 AC MINIMUM AND 220.0 AC MAXIMUM
Mounting MethodBASE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 5
6680-00-526-9354G321-4 INTERCHANGEABLE
No Item Name Available
Ldi Industries, Inc. Dba Ldi Industries Inc
4310-00-608-1146G321 INTERCHANGEABLE
Compressor Unit,reciprocating
Parker-Hannifin Corporation Dba Pneutronics Div Hydraulic Pump Division
9150-01-228-3389MOLYKOTE 33 MEDIUM 3.5OZ INTERCHANGEABLE
Grease,aircraft and Instrument
Du Pont E I De Nemours and Co Inc Security Director/legal Dept
5340-01-517-9824G321 INTERCHANGEABLE
Bracket,mounting
W S Darley & Co Div Darley Pump Division
9150-01-543-6963 INTERCHANGEABLE
Grease,aircraft and Instrument
Cross-Reference Index
Part NumberManufacturer
G-321 PRIMARY Defense Medical Standardization Board (USA)
Related Parts
6680-00-526-9354INTERCHANGEABLE
NO ITEM NAME AVAILABLE
G321-4
4310-00-608-1146INTERCHANGEABLE
COMPRESSOR UNIT,RECIPROCATING
G321
9150-01-228-3389INTERCHANGEABLE
GREASE,AIRCRAFT AND INSTRUMENT
MOLYKOTE 33 MEDIUM 3.5OZ
5340-01-517-9824INTERCHANGEABLE
BRACKET,MOUNTING
G321
9150-01-543-6963INTERCHANGEABLE
GREASE,AIRCRAFT AND INSTRUMENT

Frequently Asked Questions

What is NSN 6540-01-206-5933?

NSN 6540-01-206-5933 is a Light,slit,ophthalmic, manufactured by Defense Medical Standardization Board, classified under FSC 6540 (No Item Name Available). Status: active.

What are the part numbers for NSN 6540-01-206-5933?

NSN 6540-01-206-5933 has 1 cross-referenced part number: G-321 (Defense Medical Standardization Board).

What NSN replaces 6540-01-206-5933?

There are 5 known substitutes for 6540-01-206-5933: 6680-00-526-9354, 4310-00-608-1146, 9150-01-228-3389 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of G-321?

Key specifications for G-321: Part Name Assigned by Controlling Agency: LIGHT SLIT OPHTHALMIC 110/220 AC ALTERNATE TRAY MOUNT; Voltage Rating in Volts: 110.0 AC MINIMUM AND 220.0 AC MAXIMUM; Mounting Method: BASE; Special Features: ALTERNATE METHOD OF MOUNTING,TRAY MOUNTED. 4 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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