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National Stock Number:
1240-01-318-1478
Federal Supply Class:
1240
National Item Identification Number:
013181478
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:
| J81Y0020-1 | 12464 | MCDONNELL DOUGLAS CORP MCDONNELL DOUGLAS ELECTRONIC SYSTEMS CO | | J81Y0020-1 | 2M351 | MASTERCRAFT AEROSPACE MANUFACTURING, LLC |
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Techincal Specification:
| GUIDE DESIGN | THREAD RELIEF | | INTERNAL ANNULAR SERRATION | NOT PROVIDED | | OVERALL LENGTH | 0.140 INCHES NOMINAL | | MATERIAL | STEEL | | RECESS DIAMETER | 0.980 INCHES NOMINAL | | SETSCREW NOTCH | NOT PROVIDED | | STYLE DESIGNATOR | RECESSED | | THREAD SIZE | 1.250 IN.-24 |
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