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National Stock Number:
1240-01-232-6658
Federal Supply Class:
1240
National Item Identification Number:
012326658
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:
| 13076421 | 04939 | LOCKHEED MARTIN CORPORATION | | 13076421 | 58260 | PROGRAM MANAGER ADVANCED ATTACK HELICOPTER BARCOM AMCPM-AAH |
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Techincal Specification:
| DEPTH | 0.041 INCHES MINIMUM AND 0.051 INCHES MAXIMUM | | DIAMETER | 1.171 INCHES NOMINAL | | DRIVE TYPE | DRILLED HOLE | | COUNTERBORE TAPER ANGLE IN DEG | 33.0 | | GUIDE DESIGN | THREAD CHAMFER | | GUIDE LOCATION | EDGE OPPOSITE DRIVE EDGE | | HOLE CHAMFER ANGLE IN DEG | 45.0 | | HOLE CHAMFER DIAMETER | 0.937 INCHES NOMINAL | | HOLE DIAMETER | 0.854 INCHES MINIMUM AND 0.864 INCHES MAXIMUM | | HOLE OR SLOT QUANTITY | 8 | | INTERNAL ANNULAR SERRATION | NOT PROVIDED | | MATERIAL | ALUMINUM ALLOY 6061 | | PROPRIETARY CHARACTERISTICS | PACS | | OVERALL LENGTH | 0.745 INCHES MINIMUM AND 0.755 INCHES MAXIMUM | | RECESS DEPTH | 0.595 INCHES MINIMUM AND 0.605 INCHES MAXIMUM | | RECESS DIAMETER | 0.896 INCHES MINIMUM AND 0.897 INCHES MAXIMUM | | SETSCREW NOTCH | NOT PROVIDED | | WIDTH | 0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM | | STYLE DESIGNATOR | RECESSED | | THREAD SIZE | 1.250 IN.-40 |
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