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National Stock Number:
1240-01-318-1477
Federal Supply Class:
1240
National Item Identification Number:
013181477
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:
| J81Y0020-2 | 12464 | MCDONNELL DOUGLAS CORP MCDONNELL DOUGLAS ELECTRONIC SYSTEMS CO |
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Techincal Specification:
| GUIDE DESIGN | THREAD RELIEF | | INTERNAL ANNULAR SERRATION | NOT PROVIDED | | MATERIAL | STEEL | | OVERALL LENGTH | 0.170 INCHES NOMINAL | | RECESS DIAMETER | 1.437 INCHES NOMINAL | | SETSCREW NOTCH | NOT PROVIDED | | STYLE DESIGNATOR | RECESSED | | THREAD SIZE | 1.687 IN.-24 |
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