National Item Identification Number

01-306-4743
013064743
6650-01-306-4743
6650013064743

National Stock Number

Item Name

IRIS DIAPHRAGM,OPTICAL INSTRUMENT

Federal Supply Class

6650

Description

An adjustable item of thin, overlapping opaque plates which are actuated by a ring or other device so as to change the diameter of a central opening, for controlling the intensity of transmitted illumination. It is usually employed to regulate the aperture of a lens in microscopes, and other optical instruments.

Commercial and Government Entity Code (Supplier Data)

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04939

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Reference Numbers (Part Numbers)

13083364

Required Categories

OVERALL DIAMETER
SPECIAL FEATURES

Required Description

16.940 INCHES NOMINAL
NICKEL PLATED
63 MICROINCH SURFACE FINISH AS REQUIRED