PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12551Adapter,voltage,ophthalmoscope

Welch Allyn, Inc. · NSN 6540-01-558-6189 · FSC 6540 · No Item Name Available
Verified by PartsTable
NSN 6540-01-558-6189 — this item is cataloged by the U.S. Government under National Stock Number 6540-01-558-6189. Primary manufacturer part number: 12551.
Features
  • Adapter,voltage,ophthalmoscope — FSC 6540
  • 3 verified cross-references
  • Primary manufacturer: Welch Allyn, Inc.
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Adapter,voltage,ophthalmoscope, cataloged under National Stock Number 6540-01-558-6189, 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 3 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. Unit of issue: EA.

Technical Specifications
ParameterValue
NSN6540-01-558-6189
Primary Part Number12551
Item NameAdapter,voltage,ophthalmoscope
FSC / FSG6540 / 65 — No Item Name Available
ManufacturerWelch Allyn, Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 12
6530-01-330-3215IND 361 BD SUCCESSOR
Tape,sealing,sterilization Indic
Indilab Inc
Bracket,mounting
5905-00-119-146212551 INTERCHANGEABLE
Resistor Assembly
Drs Signal Solutions, Inc.
5920-00-131-98955510 INTERCHANGEABLE
Fuse,cartridge
Cooper Bussmann, Llc Dba Cooper Industries
3110-00-156-47335210F INTERCHANGEABLE
Bearing,ball,annular
Mcgill Manufacturing Co, Inc
6625-00-190-1258 INTERCHANGEABLE
Test Set,electrical Power
5306-00-475-96075306AC1-021 INTERCHANGEABLE
Bolt,internally Relieved Body
Us Army Aviation and Missile Command
2510-00-491-345602261-0047-01 INTERCHANGEABLE
Shock Absorber,direct Action
Asrc Federal Facilities Logistics, Llc
5310-00-515-7391 INTERCHANGEABLE
Nut,stamped
6105-00-537-230055-10 INTERCHANGEABLE
Motor-Tachometer Generator
Arc Systems Inc
Cross-Reference Index
Part NumberManufacturer
5510 Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia (USA)
12551 PRIMARY Welch Allyn, Inc. (USA)
6540NCM072072 Defense Medical Standardization Board (USA)
Related Parts
6530-01-330-3215SUCCESSOR
TAPE,SEALING,STERILIZATION INDIC
IND 361 BD
5340-01-579-8577SUCCESSOR
BRACKET,MOUNTING
5905-00-119-1462INTERCHANGEABLE
RESISTOR ASSEMBLY
12551
5920-00-131-9895INTERCHANGEABLE
FUSE,CARTRIDGE
5510
3110-00-156-4733INTERCHANGEABLE
BEARING,BALL,ANNULAR
5210F
6625-00-190-1258INTERCHANGEABLE
TEST SET,ELECTRICAL POWER
5306-00-475-9607INTERCHANGEABLE
BOLT,INTERNALLY RELIEVED BODY
5306AC1-021
2510-00-491-3456INTERCHANGEABLE
SHOCK ABSORBER,DIRECT ACTION
02261-0047-01
5310-00-515-7391INTERCHANGEABLE
NUT,STAMPED
6105-00-537-2300INTERCHANGEABLE
MOTOR-TACHOMETER GENERATOR
55-10
5930-00-642-9534INTERCHANGEABLE
SWITCH,PUSH
CQ16A1
4430-00-731-2773INTERCHANGEABLE
OVEN,THERMAL DRYING,ELECTRIC
G16950B

Frequently Asked Questions

What is NSN 6540-01-558-6189?

NSN 6540-01-558-6189 is a Adapter,voltage,ophthalmoscope, manufactured by Welch Allyn, Inc., classified under FSC 6540 (No Item Name Available). Status: active.

What are the part numbers for NSN 6540-01-558-6189?

NSN 6540-01-558-6189 has 3 cross-referenced part numbers: 5510 (Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia), 12551 (Welch Allyn, Inc.), 6540NCM072072 (Defense Medical Standardization Board).

What NSN replaces 6540-01-558-6189?

There are 12 known substitutes for 6540-01-558-6189: 6530-01-330-3215, 5340-01-579-8577, 5905-00-119-1462 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12551?

Key specifications for 12551: Special Features: VOLTAGE ADAPTER; FOUND IN UA N319, MMS OPHTHOLMOLOGY; FOR USE WITH END ITEM BINOCULAR INDIRECT OPHTHALMOSCOPE W/DIFFUSER AND YELLOW FILTER, NSN 6540-01-557-4415; Part Name Assigned by Controlling Agency: ADAPTER VOLTAGE BINOCULAR INDIRECT OPHTHALMOSCOPE; End Item Identification: 6540-01-557-4415. 3 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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