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National Stock Number:
1240-01-320-0121
Federal Supply Class:
1240
National Item Identification Number:
013200121
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:
| 13077324-501 | 04939 | LOCKHEED MARTIN CORPORATION | | 13077324-501 | 58260 | PROGRAM MANAGER ADVANCED ATTACK HELICOPTER BARCOM AMCPM-AAH | | 13077324-501 | 61801 | OMEGA PRECISION | | 13077324-501 | 9J254 | PARAGON MACHINE INC. |
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Techincal Specification:
| GUIDE DESIGN | THREAD CHAMFER | | GUIDE LOCATION | BOTH EDGES | | HOLE CHAMFER ANGLE IN DEG | 15.0 | | HOLE CHAMFER DIAMETER | 1.715 INCHES MINIMUM AND 1.725 INCHES MAXIMUM | | HOLE DIAMETER | 1.570 INCHES MINIMUM AND 1.575 INCHES MAXIMUM | | INTERNAL ANNULAR SERRATION | NOT PROVIDED | | MATERIAL | ALUMINUM ALLOY 6061 | | OVERALL LENGTH | 0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM | | RECESS DEPTH | 0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM | | RECESS DIAMETER | 1.968 INCHES MINIMUM AND 1.969 INCHES MAXIMUM | | SETSCREW NOTCH | NOT PROVIDED | | STYLE DESIGNATOR | RECESSED | | THREAD SIZE | 1.9375 IN.-32 |
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