PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

11620Ophthalmoscope

Welch Allyn, Inc. · NSN 6540-01-239-5474 · FSC 6540 · No Item Name Available
Verified by PartsTable
NSN 6540-01-239-5474 — this item is cataloged by the U.S. Government under National Stock Number 6540-01-239-5474. Primary manufacturer part number: 11620.
Features
  • Ophthalmoscope — FSC 6540
  • Cord Handle: NOT PROVIDED
  • Lens Zero Aperture: INCLUDED
  • Carrying Case: NOT PROVIDED
  • 5 verified cross-references
  • Primary manufacturer: Welch Allyn, Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Ophthalmoscope, cataloged under National Stock Number 6540-01-239-5474, 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 Welch Allyn, Inc.. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6540-01-239-5474
Primary Part Number11620
Item NameOphthalmoscope
FSC / FSG6540 / 65 — No Item Name Available
ManufacturerWelch Allyn, Inc.
StatusACTIVE
Cord HandleNOT PROVIDED
Lens Zero ApertureINCLUDED
Carrying CaseNOT PROVIDED
Lifecycle & Compliance
Acquisition StatusACTIVE
Successor5340-01-124-5977 (282509)
HAZMATNo
Verified Substitutes 12
5340-01-124-5977282509 SUCCESSOR
Shield,expansion
Hilti Inc
5306-01-292-8357411-620 SUCCESSOR
Bolt,square Neck
Cnh Industrial America Llc Dba Cnh America
Ophthalmoscope
6540-01-466-735811720 SUCCESSOR
Ophthalmoscope
Welch Allyn, Inc.
5930-00-108-6844 INTERCHANGEABLE
Switch,toggle
5935-00-153-439711-720 INTERCHANGEABLE
Connector,receptacle,electrical
Pollak Joseph Corp
5307-00-174-193111720 INTERCHANGEABLE
Stud,plain
Circor Naval Solutions Llc Dba Warren Pumps
3455-00-243-216911620 INTERCHANGEABLE
Cutter,milling,woodruff Keyseat
Niagara Cutter Inc
3120-00-294-221911620 INTERCHANGEABLE
Bearing,washer,thrust
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
5136-00-555-8906 INTERCHANGEABLE
Tap,thread Cutting
Cross-Reference Index
Part NumberManufacturer
COAXIAL OPHTHALMOSCOPE Welch Allyn Holdings, Inc. (USA)
11620 PRIMARY Welch Allyn, Inc. (USA)
11620 Welch Allyn Holdings, Inc. (USA)
COAXIAL OPHTHALMOSCOPE Welch Allyn, Inc. (USA)
11720 Krasity's Medical & Surgical Supply, Inc. Dba Krasity's (USA)
Related Parts
SUCCESSOR 5340-01-124-5977 Shield,expansion · 282509
5306-01-292-8357SUCCESSOR
BOLT,SQUARE NECK
411-620
6540-01-414-2056SUCCESSOR
OPHTHALMOSCOPE
6540-01-466-7358SUCCESSOR
OPHTHALMOSCOPE
11720
5930-00-108-6844INTERCHANGEABLE
SWITCH,TOGGLE
5935-00-153-4397INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
11-720
5307-00-174-1931INTERCHANGEABLE
STUD,PLAIN
11720
3455-00-243-2169INTERCHANGEABLE
CUTTER,MILLING,WOODRUFF KEYSEAT
11620
3120-00-294-2219INTERCHANGEABLE
BEARING,WASHER,THRUST
11620
5136-00-555-8906INTERCHANGEABLE
TAP,THREAD CUTTING
5310-00-580-3039INTERCHANGEABLE
WASHER,FLAT
5815-00-602-2782INTERCHANGEABLE
BAR,T,TELETYPEWRITER
SM-C-426564

Frequently Asked Questions

What is NSN 6540-01-239-5474?

NSN 6540-01-239-5474 is a Ophthalmoscope, manufactured by Welch Allyn, Inc., classified under FSC 6540 (No Item Name Available). Status: active.

What are the part numbers for NSN 6540-01-239-5474?

NSN 6540-01-239-5474 has 5 cross-referenced part numbers: COAXIAL OPHTHALMOSCOPE (Welch Allyn Holdings, Inc.), 11620 (Welch Allyn, Inc.), 11620 (Welch Allyn Holdings, Inc.), COAXIAL OPHTHALMOSCOPE (Welch Allyn, Inc.), 11720 (Krasity's Medical & Surgical Supply, Inc. Dba Krasity's).

What NSN replaces 6540-01-239-5474?

There are 12 known substitutes for 6540-01-239-5474: 5340-01-124-5977, 5306-01-292-8357, 6540-01-414-2056 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 11620?

Key specifications for 11620: Cord Handle: NOT PROVIDED; Lens Zero Aperture: INCLUDED; Carrying Case: NOT PROVIDED; Part Name Assigned by Controlling Agency: OPHTHALMOSCOPE 3.5V HALOGEN COAXIAL HEAD F/USE W/3.5V HANDLE V. 5 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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