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National Stock Number:
1240-00-228-1632
Federal Supply Class:
1240
National Item Identification Number:
002281632
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:
| 7660466 | 00641 | FORWAY INDUSTRIES INC | | 7660466 | 19200 | US ARMY ARDEC RDECOM |
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Techincal Specification:
| DRIVE TYPE | DRILLED HOLE | | DRIVE FACILITY ANGULAR SPACING IN DEG | 180.0 | | DEPTH | 0.094 INCHES NOMINAL | | DIAMETER | 0.094 INCHES NOMINAL | | FSC APPLICATION DATA | TELESCOPE,PANORAMIC M117 | | GUIDE DESIGN | THREAD CHAMFER | | GUIDE LOCATION | BOTH EDGES | | HOLE OR SLOT QUANTITY | 2 | | HOLE DIAMETER | 2.062 INCHES MINIMUM AND 2.072 INCHES MAXIMUM | | INTERNAL ANNULAR SERRATION | NOT PROVIDED | | OVERALL LENGTH | 0.125 INCHES MINIMUM AND 0.156 INCHES MAXIMUM | | MATERIAL | STEEL COMP 416 | | RADIUS FROM GEOMETRIC AXIS TO HOLE CENTER | 1.938 INCHES NOMINAL | | RECESS DEPTH | 0.112 INCHES MINIMUM AND 0.114 INCHES MAXIMUM | | RECESS DIAMETER | 3.687 INCHES MINIMUM AND 3.692 INCHES MAXIMUM | | SETSCREW NOTCH | NOT PROVIDED | | STYLE DESIGNATOR | RECESSED | | THREAD SIZE | 4.125 IN.-32UNS-3A |
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