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National Stock Number:
5855-01-171-6945
Federal Supply Class:
5855
National Item Identification Number:
011716945
Description:
RETAINER,OPTICAL ELEMENT
Detail:
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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Manufacturer Information:
| 13074922 | 04939 | LOCKHEED MARTIN CORPORATION | | 13074922 | 58260 | PROGRAM MANAGER ADVANCED ATTACK HELICOPTER BARCOM AMCPM-AAH |
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Techincal Specification:
| FLANGE THREAD SIZE | 1.000 IN.-40 | | HOLE DIAMETER | 0.850 INCHES NOMINAL | | INTERNAL ANNULAR SERRATION | NOT PROVIDED | | OVERALL LENGTH | 0.495 INCHES NOMINAL | | SHOULDER DIAMETER | 0.920 INCHES NOMINAL | | SHOULDER LENGTH | 0.265 INCHES NOMINAL | | STYLE DESIGNATOR | SHOULDERED |
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