PartsTable TECHNICAL DATA SHEET

JULY 2026Technical Data Sheet

20855Lamp,ophthalmoscope

Name: 20855
SKU: 6540-01-552-9721

Coopersurgical Inc Dba Coopersurgical Products · NSN 6540-01-552-9721 · FSC 6540 · No Item Name Available

Verified by PartsTable

NSN 6540-01-552-9721 — this item is cataloged by the U.S. Government under National Stock Number 6540-01-552-9721. Primary manufacturer part number: 20855.

6540-01-552-9721 — No Item Name Available illustration

Features

Lamp,ophthalmoscope — FSC 6540
3 verified cross-references
Primary manufacturer: Coopersurgical Inc Dba Coopersurgical Products

Applications

Area illumination
Indicator and warning display
Navigation and signal lighting

General Description

The Lamp,ophthalmoscope, cataloged under National Stock Number 6540-01-552-9721, 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 Coopersurgical Inc Dba Coopersurgical Products. 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

Parameter	Value
NSN	6540-01-552-9721
Primary Part Number	20855
Item Name	Lamp,ophthalmoscope
FSC / FSG	6540 / 65 — No Item Name Available
Manufacturer	Coopersurgical Inc Dba Coopersurgical Products
Status	ACTIVE

Lifecycle & Compliance

Acquisition Status	ACTIVE
HAZMAT	No
Unit of Issue	EA

⇄ Verified Substitutes 12

6110-00-081-0925 SUCCESSOR

Voltage Regulator Subassembly

2040-00-385-8903 INTERCHANGEABLE

Coupling,tube or Pi

5950-00-647-76975J24079REV5 INTERCHANGEABLE

Transformer,power

General Dynamics Mission Systems, Inc.

5950-00-676-0920 INTERCHANGEABLE

Coil,radio Frequency

5905-00-781-5709 INTERCHANGEABLE

Resistor,variable,nonwire Wound,

5905-00-835-8760AW-4076 INTERCHANGEABLE

Resistor,variable,wire Wound,non

Cts Corp Electromechanical Div

2940-00-847-277542968 INTERCHANGEABLE

Filter Element,intake Air Cleane

Wix Corp

5133-01-052-1496 INTERCHANGEABLE

Drill,twist

3895-01-121-6391002986 INTERCHANGEABLE

Pilot Light

Dover Corp Groen Div

6150-01-243-02332986 INTERCHANGEABLE

Cable Assembly,power,electrical

Davidson Optronics Inc. Dba Doi Venture

Cross-Reference Index

Part Number	Manufacturer
6540NCM071245	Defense Medical Standardization Board (USA)
20855 PRIMARY	Coopersurgical Inc Dba Coopersurgical Products (USA)
2986	Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia (USA)

Related Parts

6110-00-081-0925SUCCESSOR

VOLTAGE REGULATOR SUBASSEMBLY

2040-00-385-8903INTERCHANGEABLE

COUPLING,TUBE OR PI

5950-00-647-7697INTERCHANGEABLE

TRANSFORMER,POWER

5J24079REV5

5950-00-676-0920INTERCHANGEABLE

COIL,RADIO FREQUENCY

5905-00-781-5709INTERCHANGEABLE

RESISTOR,VARIABLE,NONWIRE WOUND,

5905-00-835-8760INTERCHANGEABLE

RESISTOR,VARIABLE,WIRE WOUND,NON

AW-4076

2940-00-847-2775INTERCHANGEABLE

FILTER ELEMENT,INTAKE AIR CLEANE

42968

5133-01-052-1496INTERCHANGEABLE

DRILL,TWIST

3895-01-121-6391INTERCHANGEABLE

PILOT LIGHT

002986

6150-01-243-0233INTERCHANGEABLE

CABLE ASSEMBLY,POWER,ELECTRICAL

2986

6675-01-345-0872INTERCHANGEABLE

BRACKET,FORK SUBASSEMBLY

29-86

5995-01-360-6693INTERCHANGEABLE

CABLE ASSEMBLY,SPECIAL PURPOSE,E

2986

Frequently Asked Questions

What is NSN 6540-01-552-9721?

NSN 6540-01-552-9721 is a Lamp,ophthalmoscope, manufactured by Coopersurgical Inc Dba Coopersurgical Products, classified under FSC 6540 (No Item Name Available). Status: active.

What are the part numbers for NSN 6540-01-552-9721?

NSN 6540-01-552-9721 has 3 cross-referenced part numbers: 6540NCM071245 (Defense Medical Standardization Board), 20855 (Coopersurgical Inc Dba Coopersurgical Products), 2986 (Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia).

What NSN replaces 6540-01-552-9721?

There are 12 known substitutes for 6540-01-552-9721: 6110-00-081-0925, 2040-00-385-8903, 5950-00-647-7697 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20855?

Key specifications for 20855: Special Features: BULB, 6.5V, 28 AMPS, FOR USE W/OPHTHALMOSCOPE; END ITEM NSN: 6540-01-548-6296 IN UA N315 V; Part Name Assigned by Controlling Agency: BULB 6.5V 28 AMP FOR USE WITH OPHTHALMOSCOPE 6540-01-548-6296 V. 2 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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