PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20-0007Ophthalmoscope

North American Rescue, Llc · NSN 6540-01-491-6651 · FSC 6540 · No Item Name Available
Verified by PartsTable
NSN 6540-01-491-6651 — this item is cataloged by the U.S. Government under National Stock Number 6540-01-491-6651. Primary manufacturer part number: 20-0007.
Features
  • Ophthalmoscope — FSC 6540
  • Lens Zero Aperture: NOT INCLUDED
  • Cord Handle: PROVIDED
  • Carrying Case: NOT PROVIDED
  • 3 verified cross-references
  • Primary manufacturer: North American Rescue, Llc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Ophthalmoscope, cataloged under National Stock Number 6540-01-491-6651, 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 North American Rescue, Llc. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 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
NSN6540-01-491-6651
Primary Part Number20-0007
Item NameOphthalmoscope
FSC / FSG6540 / 65 — No Item Name Available
ManufacturerNorth American Rescue, Llc
StatusACTIVE
Lens Zero ApertureNOT INCLUDED
Cord HandlePROVIDED
Carrying CaseNOT PROVIDED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 12
5998-00-004-4303 INTERCHANGEABLE
Extender Card,electronic Test
3110-00-100-6151MS19059-2414 INTERCHANGEABLE
Ball,bearing
American Society for Testing and Materials Dba Astm International
3439-00-115-7929 INTERCHANGEABLE
Soldering Unit,wave
4730-00-580-7408SAE J514-3 4-4 140138C INTERCHANGEABLE
Coupling,pipe
Sae International Dba Sae International
1680-00-603-745914-00007-01 INTERCHANGEABLE
Parts Kit,motor,ove
Curtiss-Wright Controls, Inc. Div Actuation Division
6625-01-023-1628200-007 INTERCHANGEABLE
Ammeter
L-3 Communications Microdyne
3120-01-041-16583226-9002-0 INTERCHANGEABLE
Bushing,sleeve
Kidde Fire Fighting, Inc. Div National Foam
5930-01-123-9449200007 INTERCHANGEABLE
Switch,electrical
Carling Technologies, Inc Dba Carlingswitch
6515-01-237-846896-0581 INTERCHANGEABLE
Screw,bone
Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia
6210-01-289-100297-5419 INTERCHANGEABLE
Light,indicator
Market Forge Industries Inc
Cross-Reference Index
Part NumberManufacturer
01-0546 Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia (USA)
20-0007 PRIMARY North American Rescue, Llc (USA)
NAR-OPT North American Rescue, Llc (USA)
Related Parts
5998-00-004-4303INTERCHANGEABLE
EXTENDER CARD,ELECTRONIC TEST
3110-00-100-6151INTERCHANGEABLE
BALL,BEARING
MS19059-2414
3439-00-115-7929INTERCHANGEABLE
SOLDERING UNIT,WAVE
4730-00-580-7408INTERCHANGEABLE
COUPLING,PIPE
SAE J514-3 4-4 140138C
1680-00-603-7459INTERCHANGEABLE
PARTS KIT,MOTOR,OVE
14-00007-01
6625-01-023-1628INTERCHANGEABLE
AMMETER
200-007
3120-01-041-1658INTERCHANGEABLE
BUSHING,SLEEVE
3226-9002-0
5930-01-123-9449INTERCHANGEABLE
SWITCH,ELECTRICAL
200007
6515-01-237-8468INTERCHANGEABLE
SCREW,BONE
96-0581
6210-01-289-1002INTERCHANGEABLE
LIGHT,INDICATOR
97-5419
4730-01-366-3717INTERCHANGEABLE
NIPPLE,PIPE
200007
3120-01-380-3060INTERCHANGEABLE
ROLLER,LINEAR-ROTARY MOTION
200007

Frequently Asked Questions

What is NSN 6540-01-491-6651?

NSN 6540-01-491-6651 is a Ophthalmoscope, manufactured by North American Rescue, Llc, classified under FSC 6540 (No Item Name Available). Status: active.

What are the part numbers for NSN 6540-01-491-6651?

NSN 6540-01-491-6651 has 3 cross-referenced part numbers: 01-0546 (Defense Logistics Agency Directorate of Medical Materiel Defense Supply Center Philadelphia), 20-0007 (North American Rescue, Llc), NAR-OPT (North American Rescue, Llc).

What NSN replaces 6540-01-491-6651?

There are 12 known substitutes for 6540-01-491-6651: 5998-00-004-4303, 3110-00-100-6151, 3439-00-115-7929 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 20-0007?

Key specifications for 20-0007: Special Features: COMPACT, DURABLE, DUSTPROOF, 2.5 V HALOGEN BULB PRODUCES A BRIGHT, WHITE LIGTH; PRECISION OPTICAL SYSTEM ENSURES A BRILLANT IMAGE; 4 DIFFERENT APERATURES:LARGE SPOT, SMALL SPOT, HALF MOON AND RED FREE FILTER; HANDLE INCORPORATES A STRONG POCKET CLIP WITH ON/OFF SWITCH; PERMANENT ANTI-REFLEX COATINGS TO REDUCE GLARE; HIGH CONTRAST INTERFERENCE RED FREE FILTER; AVAILABLE IN BLACK V; Part Name Assigned by Controlling Agency: OPHTHALMOSCOPE COMPACT DURABLE DUSTPROOF 2.5 V HALOGEN BULB V; Lens Zero Aperture: NOT INCLUDED; Cord Handle: PROVIDED. 5 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