B5631

View detailed technical data, stock status, and sourcing information for: B5631
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Federal Supply Group

Nonmetallic Fabricated Materials

Federal Supply Classification

9340 Glass Fabricated Materials

National Stock Number

9340-00-028-7122

Item Name Code

16880

Assigment Date

01/01/1963 (63 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.

0.344 inches nominal overall thickness, glass material, pressed in counterbored hole and oil level stenciled on glass front special features, 1.250 inches nominal overall diameter, clear 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 Diameter: 1.250 inches nominal
Overall Thickness: 0.344 inches nominal
Material Transparency: clear
Special Features: pressed in counterbored hole and oil level stenciled on glass front
Material: glass
Style Designator: circular

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
6680-00-132-4732	No Name Available	01/01/1978
1680-01-075-8574	No Name Available	12/01/1981

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
B5361	Observation Window
B5631	Observation Window
B5631PCALL	Observation Window
P2710-1	Observation Window
SP45PC26	Observation Window
SP49REVAITEM8	Observation Window
SP56PC26	Observation Window

FAQs

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

What is the FSCG of the NSN 9340-00-028-7122?

The FSCG of the NSN 9340-00-028-7122 is 9340

Does the NSN 9340-00-028-7122 have a Schedule B code assigned?

Yes, the Schedule B code is 7016900000

Does NSN 9340-00-028-7122 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 9340-00-028-7122 contain precious materials?

Item does not contain precious metal.

Does NSN 9340-00-028-7122 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 9340-00-028-7122 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963