1780817

Optical element retainer

1780817 Description

0.245 inches width, 0.375 inches diameter, target acquisition subsystem end item identification, shaft retainer , length 0.520 inches; 0.04 ounces .

Features

Length 0.520 inches; 0.04 ounces

Properties of 1780817

Width:
Between 0.245 inches and 0.255 inches
Diameter:
0.375 inches
End Application:
Target acquisition subsystem
Part Name Assigned By Controlling Agency:
Shaft retainer
NSN:
1240-01-528-9189
Description:
Retainer,optical Element
Cage Code:

Definition Optical Element Retainer

A cylindrical, externally threaded item having a centrally located hole specifically designed to retain by means of either a raised box (shoulder), or counterbore, countersink, or a similar shaped recess, an optical element such as a lens, reticle, cell, and the like, in optical assemblies. It must have drilled holes or slots to facilitate assembly and disassembly. For items which house the optical element(s), and form the internal or central portions of an optical system, see cell, optical element. Excludes ring, externally threaded.

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Last modified 04/28/2024