PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12500-DYOphthalmoscope

Welch Allyn, Inc. · NSN 6540-01-558-7765 · FSC 6540 · No Item Name Available
Verified by PartsTable
NSN 6540-01-558-7765 — this item is cataloged by the U.S. Government under National Stock Number 6540-01-558-7765. Primary manufacturer part number: 12500-DY.
Features
  • Ophthalmoscope — FSC 6540
  • 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 6540-01-558-7765, 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.. This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6540-01-558-7765
Primary Part Number12500-DY
Item NameOphthalmoscope
FSC / FSG6540 / 65 — No Item Name Available
ManufacturerWelch Allyn, Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
5331-00-231-3235 INTERCHANGEABLE
O-Ring
5935-00-259-3336 INTERCHANGEABLE
Connector,receptacle,electrical
3020-00-361-63425566 INTERCHANGEABLE
Gear,spur
Cummins Inc.
5998-01-048-3769 INTERCHANGEABLE
Circuit Card Assembly
9540-01-072-1176 INTERCHANGEABLE
Angle,structural
4730-01-195-380660UA06X06 INTERCHANGEABLE
Elbow,pipe
Aerocontrolex Group, Inc. Div Talley Actuators
5365-01-306-58945566 INTERCHANGEABLE
Spacer,ring
Howell Laboratories Inc Dba Howell Laboratories Inc
5120-01-399-9704 INTERCHANGEABLE
Socket,socket Wrench
2590-01-570-97205566 INTERCHANGEABLE
Bracket,vehicular Components
Festo (pty) Ltd
Cross-Reference Index
Part NumberManufacturer
12501-DY Welch Allyn, Inc. (USA)
BINOCULAR INDIRECT OPHTHALMOSC Welch Allyn, Inc. (USA)
6540NCM072095 Defense Medical Standardization Board (USA)
12500-DY PRIMARY Welch Allyn, Inc. (USA)
5566 Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia (USA)
Related Parts
5331-00-231-3235INTERCHANGEABLE
O-RING
5935-00-259-3336INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
3020-00-361-6342INTERCHANGEABLE
GEAR,SPUR
5566
5998-01-048-3769INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
9540-01-072-1176INTERCHANGEABLE
ANGLE,STRUCTURAL
4730-01-195-3806INTERCHANGEABLE
ELBOW,PIPE
60UA06X06
5365-01-306-5894INTERCHANGEABLE
SPACER,RING
5566
5120-01-399-9704INTERCHANGEABLE
SOCKET,SOCKET WRENCH
2590-01-570-9720INTERCHANGEABLE
BRACKET,VEHICULAR COMPONENTS
5566

Frequently Asked Questions

What is NSN 6540-01-558-7765?

NSN 6540-01-558-7765 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 6540-01-558-7765?

NSN 6540-01-558-7765 has 5 cross-referenced part numbers: 12501-DY (Welch Allyn, Inc.), BINOCULAR INDIRECT OPHTHALMOSC (Welch Allyn, Inc.), 6540NCM072095 (Defense Medical Standardization Board), 12500-DY (Welch Allyn, Inc.), 5566 (Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia).

What NSN replaces 6540-01-558-7765?

There are 9 known substitutes for 6540-01-558-7765: 5331-00-231-3235, 5935-00-259-3336, 3020-00-361-6342 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12500-DY?

Key specifications for 12500-DY: Special Features: BINOCULAR INDIRECT OPHTHALMOSCOPE W/ DIFFUSER AND YELLOW FILTER; ADJUSTS TO HANDLE INTERPUPILLARY DISTANCES OF 48 TO 75MM; PADDED HEADBAND; SEALED OPTICS; FOR USE WITH END ITEM BINOCULAR INDIRECT OPHTHALMOSCOPE WITH PROVISIONING, NSN 6540-01-557-4415 MM; Part Name Assigned by Controlling Agency: OPHTHALMOSCOPE BINOCULAR INDIRECT. 2 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com