A-21158

View detailed technical data, stock status, and sourcing information for: A-21158
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Federal Supply Group

Nonmetallic Fabricated Materials

Federal Supply Classification

9330 Plastics Fabricated Materials

National Stock Number

9330-01-278-4747

Item Name Code

16880

Assigment Date

05/05/1988 (38 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.

four corners cutouts 0.19 in. by 45 deg; non-glare special features, 3.810 inches nominal overall length, 0.062 inches nominal overall thickness, 1.440 inches nominal overall width, translucent material transparency

Product Characteristics

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

Overall Length: 3.810 inches nominal
Overall Width: 1.440 inches nominal
Overall Thickness: 0.062 inches nominal
Material Transparency: translucent
Special Features: four corners cutouts 0.19 in. by 45 deg; non-glare
Color: red
Material: plastic acrylic
Style Designator: chamfered 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
A-21158	Observation Window

FAQs

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

What is the FSCG of the NSN 9330-01-278-4747?

The FSCG of the NSN 9330-01-278-4747 is 9330

Does the NSN 9330-01-278-4747 have a Schedule B code assigned?

Yes, the Schedule B code is 3926909988

Does NSN 9330-01-278-4747 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 9330-01-278-4747 contain precious materials?

Item does not contain precious metal.

Does NSN 9330-01-278-4747 contain hazardous materials?

Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of fed std 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.

When the NSN 9330-01-278-4747 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Thu, May 5, 1988