National Item Identification Number

00-531-1979
005311979
9340-00-531-1979
9340005311979

National Stock Number

Item Name

WINDOW,OBSERVATION

Federal Supply Class

9340

Description

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.

Commercial and Government Entity Code (Supplier Data)

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19200

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Reference Numbers (Part Numbers)

7632377

Required Categories

STYLE DESIGNATOR
OVERALL DIAMETER
OVERALL THICKNESS
MATERIAL
MATERIAL DOCUME

Required Description

4 CIRCULAR
0.740 INCHES MINIMUM AND
0.745 INCHES MAXIMUM
0.070 INCHES MINIMUM