PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2000-020Chart,vision Acuity Testing

Stereo Optical Company, Inc · NSN 6540-01-526-0957 · FSC 6540 · No Item Name Available
Verified by PartsTable
NSN 6540-01-526-0957 — this item is cataloged by the U.S. Government under National Stock Number 6540-01-526-0957. Primary manufacturer part number: 2000-020.
Features
  • Chart,vision Acuity Testing — FSC 6540
  • 1 verified cross-reference
  • Primary manufacturer: Stereo Optical Company, Inc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Chart,vision Acuity Testing, cataloged under National Stock Number 6540-01-526-0957, 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 Stereo Optical Company, Inc. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6540-01-526-0957
Primary Part Number2000-020
Item NameChart,vision Acuity Testing
FSC / FSG6540 / 65 — No Item Name Available
ManufacturerStereo Optical Company, Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5330-01-065-74282000-020 INTERCHANGEABLE
Seal,plain
Bal Seal Engineering, Inc.
5985-01-663-801620-00020 INTERCHANGEABLE
Antenna Subassembly
L3 Technologies, Inc. Dba Harris Corp
Cross-Reference Index
Part NumberManufacturer
2000-020 PRIMARY Stereo Optical Company, Inc (USA)
Related Parts
5330-01-065-7428INTERCHANGEABLE
SEAL,PLAIN
2000-020
5985-01-663-8016INTERCHANGEABLE
ANTENNA SUBASSEMBLY
20-00020

Frequently Asked Questions

What is NSN 6540-01-526-0957?

NSN 6540-01-526-0957 is a Chart,vision Acuity Testing, manufactured by Stereo Optical Company, Inc, classified under FSC 6540 (No Item Name Available). Status: active.

What are the part numbers for NSN 6540-01-526-0957?

NSN 6540-01-526-0957 has 1 cross-referenced part number: 2000-020 (Stereo Optical Company, Inc).

What NSN replaces 6540-01-526-0957?

There are 2 known substitutes for 6540-01-526-0957: 5330-01-065-7428, 5985-01-663-8016. Verify interchangeability with system specifications before substitution.

What are the specifications of 2000-020?

Key specifications for 2000-020: End Item Identification: OPTEC VISION TESTER; Special Features: FAR MUSCLE BALANCE, LATERAL AND VERTICAL PHORIA. 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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