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National Stock Number:
1240-01-320-1003
Federal Supply Class:
1240
National Item Identification Number:
013201003
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:
| 13077163-501 | 04939 | LOCKHEED MARTIN CORPORATION | | 13077163-501 | 58260 | PROGRAM MANAGER ADVANCED ATTACK HELICOPTER BARCOM AMCPM-AAH |
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Techincal Specification:
| DRIVE TYPE | SLOTTED | | GUIDE DESIGN | THREAD CHAMFER | | HOLE CHAMFER ANGLE IN DEG | 30.0 | | HOLE CHAMFER DIAMETER | 1.029 INCHES MINIMUM AND 1.033 INCHES MAXIMUM | | HOLE DIAMETER | 0.974 INCHES MINIMUM AND 1.004 INCHES MAXIMUM | | HOLE OR SLOT QUANTITY | 4 | | INTERNAL ANNULAR SERRATION | NOT PROVIDED | | MATERIAL | ALUMINUM ALLOY 6061 | | RECESS DEPTH | 0.130 INCHES NOMINAL | | RECESS DIAMETER | 0.974 INCHES MINIMUM AND 1.004 INCHES MAXIMUM | | OVERALL LENGTH | 0.145 INCHES MINIMUM AND 0.155 INCHES MAXIMUM | | SETSCREW NOTCH | NOT PROVIDED | | STYLE DESIGNATOR | RECESSED | | THREAD SIZE | 1.125 IN.-40 | | WIDTH | 0.040 INCHES NOMINAL |
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