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National Stock Number:
1240-01-131-5319
Federal Supply Class:
1240
National Item Identification Number:
011315319
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:
| 12309688 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
| GUIDE DESIGN | THREAD CHAMFER | | GUIDE LOCATION | BOTH EDGES | | HOLE CHAMFER ANGLE IN DEG | 45.0 | | HOLE CHAMFER DIAMETER | 1.2650 INCHES MINIMUM AND 1.2750 INCHES MAXIMUM | | HOLE DIAMETER | 1.1200 INCHES MINIMUM AND 1.1300 INCHES MAXIMUM | | INTERNAL ANNULAR SERRATION | NOT PROVIDED | | OVERALL LENGTH | 0.2200 INCHES NOMINAL | | MATERIAL | STEEL CORROSION RESISTING | | RECESS DEPTH | 0.1000 INCHES NOMINAL | | RECESS DIAMETER | 1.2650 INCHES MINIMUM AND 1.2750 INCHES MAXIMUM | | SETSCREW NOTCH | NOT PROVIDED | | STYLE DESIGNATOR | RECESSED | | THREAD SIZE | A1.3750 |
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