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National Stock Number:
1240-01-232-4966
Federal Supply Class:
1240
National Item Identification Number:
012324966
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:
| 13076435 | 04939 | LOCKHEED MARTIN CORPORATION | | 13076435 | 58260 | PROGRAM MANAGER ADVANCED ATTACK HELICOPTER BARCOM AMCPM-AAH |
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Techincal Specification:
| DEPTH | 0.035 INCHES MINIMUM AND 0.045 INCHES MAXIMUM | | DRIVE TYPE | SLOTTED | | DRIVE FACILITY ANGULAR SPACING IN DEG | 90.0 | | GUIDE DESIGN | THREAD CHAMFER | | GUIDE LOCATION | BOTH EDGES | | HOLE CHAMFER ANGLE IN DEG | 16.0 | | HOLE CHAMFER DIAMETER | 0.890 INCHES MINIMUM AND 0.900 INCHES MAXIMUM | | HOLE DIAMETER | 0.655 INCHES MINIMUM AND 0.665 INCHES MAXIMUM | | HOLE OR SLOT QUANTITY | 4 | | INTERNAL ANNULAR SERRATION | NOT PROVIDED | | MATERIAL | ALUMINUM ALLOY 6061 | | PROPRIETARY CHARACTERISTICS | PACS | | OVERALL LENGTH | 0.145 INCHES MINIMUM AND 0.155 INCHES MAXIMUM | | RECESS ANGLE IN DEG | 20.0 | | RECESS DEPTH | 0.061 INCHES NOMINAL | | SETSCREW NOTCH | NOT PROVIDED | | WIDTH | 0.050 INCHES MINIMUM AND 0.070 INCHES MAXIMUM | | STYLE DESIGNATOR | RECESSED | | THREAD SIZE | 0.937 IN.-40 |
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