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National Stock Number:
1240-00-316-0263
Federal Supply Class:
1240
National Item Identification Number:
003160263
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:
| 10515959 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| DEPTH | 0.047 INCHES NOMINAL | | DRIVE TYPE | SLOTTED | | DRIVE FACILITY ANGULAR SPACING IN DEG | 180.0 | | GUIDE DESIGN | THREAD RELIEF | | GUIDE LOCATION | EDGE OPPOSITE DRIVE EDGE | | HOLE CHAMFER DIAMETER | 0.340 INCHES NOMINAL | | HOLE CHAMFER ANGLE IN DEG | 45.0 | | HOLE DIAMETER | 0.234 INCHES NOMINAL | | HOLE OR SLOT QUANTITY | 2 | | INTERNAL ANNULAR SERRATION | NOT PROVIDED | | MATERIAL | ALUMINUM ALLOY 2024 | | RECESS DEPTH | 0.047 INCHES NOMINAL | | RECESS DIAMETER | 0.265 INCHES NOMINAL | | OVERALL LENGTH | 0.188 INCHES NOMINAL | | SETSCREW NOTCH | NOT PROVIDED | | STYLE DESIGNATOR | RECESSED | | THREAD SIZE | 0.438 IN.-28 | | WIDTH | 0.047 INCHES NOMINAL |
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