SM-C-850421

View detailed technical data, stock status, and sourcing information for: SM-C-850421
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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

6650-01-165-2170

Item Name Code

22261

Assigment Date

10/27/1983 (42 years ago)

A tubular shaped item designed to maintain a predetermined distance between optical elements, such as lenses, reticles, and the like. The bore may be straight, tapered or counterbored, and may have annular serrations to converge or diverge light rays. The surfaces, which mate with the optics, are usually chamfered, concave, and/or have a specified finish designation in the range of 1 to 125 microinches arithmetical average (aa). See also spacer, sleeve and cell, optical element.

1.563 inches minimum and 1.565 inches maximum straight bore inside diameter, aluminum alloy 6061 material, 0.245 inches minimum and 0.246 inches maximum overall length, 0.175 inches nominal serration width, 1.653 inches maximum body outside diameter

Product Characteristics

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

Overall Length: 0.245 inches minimum and 0.246 inches maximum
Body Outside Diameter: 1.653 inches maximum
Straight Bore Inside Diameter: 1.563 inches minimum and 1.565 inches maximum
Serration Width: 0.175 inches nominal
Material: aluminum alloy 6061
Material Document And Classification: qq-a-250/11,alloy 6061,t6 mil spec single material response
Style Designator: spacer
Fsc Application Data: night vision equipment,emitted and reflected radiation

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
SM-C-850421	Optical Element Spacer

FAQs

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

What is the FSCG of the NSN 6650-01-165-2170?

The FSCG of the NSN 6650-01-165-2170 is 6650

Does the NSN 6650-01-165-2170 have a Schedule B code assigned?

Yes, the Schedule B code is 9018500000

Does NSN 6650-01-165-2170 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 6650-01-165-2170 contain precious materials?

Item does not contain precious metal.

Does NSN 6650-01-165-2170 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 6650-01-165-2170 was assigned to the Federal Catalog?

It was assigned 42 years ago, on Thu, Oct 27, 1983