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National Stock Number:
1240-01-129-0936
Federal Supply Class:
1240
National Item Identification Number:
011290936
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:
| 12309701 | 19207 | U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM |
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Techincal Specification:
| FLANGE DIAMETER | 1.7500 INCHES NOMINAL | | GUIDE DESIGN | THREAD CHAMFER | | GUIDE LOCATION | BOTH EDGES | | INTERNAL ANNULAR SERRATION | NOT PROVIDED | | MATERIAL | ALUMINUM ALLOY 2011 | | OVERALL LENGTH | 0.3120 INCHES NOMINAL | | SETSCREW NOTCH | NOT PROVIDED | | SHOULDER DIAMETER | 1.6250 INCHES NOMINAL | | SHOULDER LENGTH | 0.1250 INCHES NOMINAL | | STYLE DESIGNATOR | SHOULDERED | | TAPERED HOLE MINOR DIAMETER | 1.4780 INCHES NOMINAL | | TAPER ANGLE IN DEG | 15.0 |
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