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National Stock Number:
1240-01-079-3049
Federal Supply Class:
1240
National Item Identification Number:
010793049
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:
| 12282212 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| DRIVE TYPE | SLOTTED | | DIAMETER | 0.030 INCHES NOMINAL | | GUIDE DESIGN | THREAD CHAMFER | | HOLE DIAMETER | 2.750 INCHES NOMINAL | | HOLE OR SLOT QUANTITY | 2 | | INTERNAL ANNULAR SERRATION | NOT PROVIDED | | OVERALL LENGTH | 0.220 INCHES NOMINAL | | MATERIAL | ALUMINUM ALLOY 2024 | | RECESS ANGLE IN DEG | 45.0 | | RECESS DEPTH | 0.190 INCHES NOMINAL | | SETSCREW NOTCH | NOT PROVIDED | | STYLE DESIGNATOR | RECESSED | | THREAD SIZE | A3.250 |
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