2558429-1

View detailed technical data, stock status, and sourcing information for: 2558429-1
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Federal Supply Group

Nonmetallic Fabricated Materials

Federal Supply Classification

9340 Glass Fabricated Materials

National Stock Number

9340-00-016-2431

Item Name Code

16880

Assigment Date

04/25/1967 (59 years ago)

A transparent item of a predetermined size that permits unobstructed and undistorted view of a desired area. It may include a frame, have reference markings, grid lines and may be heat strengthened and/or tinted. It is generally used where safety, security, and/or the restriction of foreign matter are required, such as the visual examination of the inside of pressurized tanks, liquid sights, controlled liquid flow, and inspection of equipment enclosed in a housing. See window (as modified); scale, cathode ray tube; scale, plotting; window, metal; window, wood; and window panel, aircraft.

4.350 inches minimum and 4.410 inches maximum overall length, 0.187 inches minimum and 0.203 inches maximum overall thickness, 1 ply quantity, 13.350 inches minimum and 13.410 inches maximum overall width, polished surface finish

Product Characteristics

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

Ply Quantity: 1
Overall Length: 4.350 inches minimum and 4.410 inches maximum
Overall Width: 13.350 inches minimum and 13.410 inches maximum
Overall Thickness: 0.187 inches minimum and 0.203 inches maximum
Surface Finish: polished
First Corner Radius: 0.120 inches nominal
Second Corner Radius: 0.120 inches nominal
Third Corner Radius: 0.120 inches nominal
Material Transparency: clear
Fourth Corner Radius: 0.120 inches nominal
Edge Type: flat finish
Special Features: one side with conductive coating of pittsburg plate glass nesa or equiv whose light transmission is 65 pct min and an elec res rf shielding of 50 ohms per sq or less,bus bar a non-insulated conductor in contact with the conductive coating,one coat of anti-reflection coating mil-c-675 located on opposite side of glass from bus bar and conductive coating
Material: glass borosilicate
Material Document And Classification: dd-g-451,type 1,mirror glazing quality fed spec single material response
Style Designator: rounded corners

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
2558429-1	Observation Window

FAQs

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

What is the FSCG of the NSN 9340-00-016-2431?

The FSCG of the NSN 9340-00-016-2431 is 9340

Does the NSN 9340-00-016-2431 have a Schedule B code assigned?

Yes, the Schedule B code is 7016900000

Does NSN 9340-00-016-2431 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 9340-00-016-2431 contain precious materials?

Item does not contain precious metal.

Does NSN 9340-00-016-2431 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 9340-00-016-2431 was assigned to the Federal Catalog?

It was assigned 59 years ago, on Tue, Apr 25, 1967