31-20-68-38

View detailed technical data, stock status, and sourcing information for: 31-20-68-38
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Federal Supply Group

Instruments and Laboratory Equipment

Federal Supply Classification

6650 Components and Accessories Test Equipment Optical Instruments

National Stock Number

6650-00-856-8020

Item Name Code

09176

Assigment Date

01/01/1962 (64 years ago)

141.0 millimeters nominal length, illuminator w/bright field and dark field 1; yellow filter,1; green filter,1; blue filter,1 accessory components and quantity, metallurgy usage design, 116.0 millimeters nominal width, provided carrying case

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Width: 116.0 millimeters nominal
Length: 141.0 millimeters nominal
Carrying Case: provided
Accessory Components And Quantity: illuminator w/bright field and dark field 1; yellow filter,1; green filter,1; blue filter,1
Usage Design: metallurgy
Design Type: general purpose
Focusing Type: adjustable
Lens Type: achromatic
Magnification: 8.0x nominal and 10.0x nominal and 20.0x nominal and 40.0x nominal
Nonstereoscopic Type: binocular
Body Tube Position: inclined
Body Tube Interchangeability Feature: provided
Body Tube Analyzer: included
Body Tube Bertrand Lens: not provided
Body Tube Accessroy Slot: not provided
Stage Shape: rectangular
Stage Type: mechanical
Centering Feature: not provided
Mounted Cross Hairs: not provided
Disc Insert Usage Design: provided
Lens Coating Feature: coated
Cover Glass Correction Collar: not provided
Objective Type: dry
Stage Calibration Facility: graduated scale
Polarizer: provided
Mirror Quantity: 1
Mirror Surface Contour: plane
Nosepiece Design: turret
Nosepiece Place Quantity: 4
Objective Quantity: 4
Funnel Stop Design Feature: not provided
Objective Iris Diaphragm: not provided
Mounted Micrometer Scale: not provided
Eyepiece Quantity: 4
Eyepiece Designator: huygenian
Eyepiece Magnification: 7.5 and 12.5

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
31-20-68-38	Optical Microscope

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 6650-00-856-8020?

The FSCG of the NSN 6650-00-856-8020 is 6650

Does the NSN 6650-00-856-8020 have a Schedule B code assigned?

Yes, the Schedule B code is 9018500000

Does NSN 6650-00-856-8020 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 6650-00-856-8020 contain precious materials?

Item does not contain precious metal.

Does NSN 6650-00-856-8020 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 6650-00-856-8020 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962