PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4201103Microscope,optical

Thorlabs, Inc · NSN 6650-01-688-1673 · FSC 6650 · No Item Name Available
Verified by PartsTable
NSN 6650-01-688-1673 — this item is cataloged by the U.S. Government under National Stock Number 6650-01-688-1673. Primary manufacturer part number: 4201103.
Features
  • Microscope,optical — FSC 6650
  • Focusing Type: ADJUSTABLE
  • Length: 7.50 INCHES NOMINAL IN
  • Magnification: 200.0 MAXIMUM
  • Usage Design: LABORATORY
  • Diameter: 1.94 INCHES NOMINAL IN
  • Nonstereoscopic Type: MONOCULAR
  • Accessory Components and Quantity: INTERCHANGEABLE ADAPTERS
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Microscope,optical, cataloged under National Stock Number 6650-01-688-1673, is classified within Federal Supply Class 6650 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Thorlabs, Inc. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, 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
NSN6650-01-688-1673
Primary Part Number4201103
Item NameMicroscope,optical
FSC / FSG6650 / 66 — No Item Name Available
ManufacturerThorlabs, Inc
StatusACTIVE
Focusing TypeADJUSTABLE
Length7.50 INCHES NOMINAL IN
Magnification200.0 MAXIMUM
Usage DesignLABORATORY
Diameter1.94 INCHES NOMINAL IN
Nonstereoscopic TypeMONOCULAR
Accessory Components and QuantityINTERCHANGEABLE ADAPTERS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
2940-01-158-178546086 INTERCHANGEABLE
Filter Element,intake Air Cleane
Wix Corp
5999-01-307-070621044194-101 INTERCHANGEABLE
Shielding Gasket,electronic
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
Cross-Reference Index
Part NumberManufacturer
92023043 Thales Sa (FRA)
4201103 PRIMARY Thorlabs, Inc (USA)
Related Parts
2940-01-158-1785INTERCHANGEABLE
FILTER ELEMENT,INTAKE AIR CLEANE
46086
5999-01-307-0706INTERCHANGEABLE
SHIELDING GASKET,ELECTRONIC
21044194-101

Frequently Asked Questions

What is NSN 6650-01-688-1673?

NSN 6650-01-688-1673 is a Microscope,optical, manufactured by Thorlabs, Inc, classified under FSC 6650 (No Item Name Available). Status: active.

What are the part numbers for NSN 6650-01-688-1673?

NSN 6650-01-688-1673 has 2 cross-referenced part numbers: 92023043 (Thales Sa), 4201103 (Thorlabs, Inc).

What NSN replaces 6650-01-688-1673?

There are 2 known substitutes for 6650-01-688-1673: 2940-01-158-1785, 5999-01-307-0706. Verify interchangeability with system specifications before substitution.

What are the specifications of 4201103?

Key specifications for 4201103: Focusing Type: ADJUSTABLE; Part Name Assigned by Controlling Agency: FIBER INSPECTION SCOPE; Special Features: 3 LR44 BATTERIES; Length: 7.50 INCHES NOMINAL IN. 9 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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