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National Stock Number:
1240-01-275-8566
Federal Supply Class:
1240
National Item Identification Number:
012758566
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:
| 11741568 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| GUIDE DESIGN | THREAD CHAMFER | | GUIDE LOCATION | BOTH EDGES | | HOLE CHAMFER ANGLE IN DEG | 30.0 | | HOLE CHAMFER DIAMETER | 1.850 INCHES NOMINAL | | HOLE DIAMETER | 1.570 INCHES NOMINAL | | INTERNAL ANNULAR SERRATION | NOT PROVIDED | | OVERALL LENGTH | 0.290 INCHES NOMINAL | | MATERIAL | STEEL CORROSION RESISTING | | RECESS DEPTH | 0.190 INCHES NOMINAL | | RECESS DIAMETER | 1.850 INCHES NOMINAL | | SETSCREW NOTCH | NOT PROVIDED | | STYLE DESIGNATOR | RECESSED | | THREAD SIZE | 2.094IN.-32 |
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